help: keep consistent style of help messages

Use imperative mood everywhere.
End sentences with dots.
Capitalize sentences.

cmd/v/internal/help/build-c.txt

@@ -8,54 +8,54 @@ For help regarding building an executable, see `v help build`.
 These build flags are enabled on `build` and `run` as long as the backend is set to `c`:
 
    -arch <architecture>
-      Changes the architecture that V will tell the C compiler to build.
+      Change the architecture that V will tell the C compiler to build.
       List of supported architectures: `x86` and `x64` (default).
 
    -cc <compiler>, -compiler <compiler>
-      Changes the C compiler V invokes to the specified compiler.
+      Change the C compiler V invokes to the specified compiler.
       The C compiler is required to support C99.
       Officially supported/tested C compilers include: `clang`, `gcc`, `tcc`, `mingw-w64` and `msvc`.
 
    -cf <flag>, -cflags <flag>
-      Passes the provided flag as is to the C compiler.
+      Pass the provided flag as is to the C compiler.
       Can be specified multiple times to provide multiple flags.
       Use quotes to wrap the flag argument if it contains spaces.
 
    -cg, -cdebug
-      Enables debug mode while preserving C line numbers in the compiled executable.
+      Enable debug mode while preserving C line numbers in the compiled executable.
       This allows issues regarding C compilation to be located more easily.
 
    -compress
-      Strips the compiled executable to compress it.
+      Strip the compiled executable to compress it.
 
    -csource <prettify|keep|drop>
-      Specifies how V deals with the intermediate C source code.
+      Specify how V deals with the intermediate C source code.
       * `prettify`       - The C source code will be kept.
                            `clang-format` is used to prettify the C source code before compiling it.
       * `keep`           - The C source code will be kept as generated by V.
       * `drop` (default) - The C source code will be deleted after compiling the executable.
 
    -freestanding
-      Builds the executable without dependency on libc.
+      Build the executable without dependency on libc.
       Supported only on `linux` targets currently.
 
    -live
-      Builds the executable with live capabilities (`[live]`).
+      Build the executable with live capabilities (`[live]`).
 
    -manual-free
-      Enables manually freeing on all V code. This will cause memory leaks in vlib.
+      Enable manually freeing on all V code. This will cause memory leaks in vlib.
       Currently enabled until a stable auto-free system is in place.
 
    -os <os>, -target-os <os>
-      Changes the target OS that V tries to compile for.
+      Change the target OS that V tries to compile for.
       By default, the target OS is the host system.
       When OS is `cross`, V will attempt to output cross-platform C code.
       List of OS supported by V: `linux`, `windows`, `mac`, `freebsd`, `openbsd`, `netbsd`,
                                  `dragonfly`, `solaris`, `android` and `haiku`.
 
    -sanitize
-      Passes flags related to sanitization to the C compiler.
+      Pass flags related to sanitization to the C compiler.
 
    -shared
-      Tells V to compile a shared object instead of an executable.
+      Tell V to compile a shared object instead of an executable.
       The resulting file extension will be `.dll` on Windows and `.so` on Unix systems

cmd/v/internal/help/build.txt

@@ -33,7 +33,7 @@ The build flags are shared by the build and run commands:
                               current backends when finished
 
    -d <flag>[=<value>], -define <flag>[=<value>]
-      Defines the provided flag.
+      Define the provided flag.
       If value is not provided, it is assumed to be set to `true`.
       `value` should be `1` or `0` to indicate `true` and `false` respectively otherwise.
 
@@ -42,21 +42,21 @@ The build flags are shared by the build and run commands:
       Currently, the only experiment available is: `prealloc`
 
    -full-rebuild
-      Forces a full rebuild of all dependencies.
+      Force a full rebuild of all dependencies.
       Enabled by default currently until caching works reliably.
 
    -g
-      Compiles the executable in debug mode, allowing code to be debugged more easily.
+      Compile the executable in debug mode, allowing code to be debugged more easily.
 
    -o <output>, -output <output>
-      Forces V to output the executable in a specific location.
+      Force V to output the executable in a specific location
-      (relative to the current working directory if not absolute)
+      (relative to the current working directory if not absolute).
 
    -obf, -obfuscate
-      Turns on obfuscation for the code being built. Currently only renames symbols.
+      Turn on obfuscation for the code being built. Currently only renames symbols.
 
    -path
-      Specifies the order of path V looks up in while searching for imported dependencies,
+      Specify the order of path V looks up in while searching for imported dependencies,
       separated by pipes (`|`). In addition to absolute paths, you can
       also use these special strings too:
            @vmodules - replaced with the location of the global ~/.vmodules/ folder
@@ -67,10 +67,10 @@ The build flags are shared by the build and run commands:
       By default, -path is just "@vlib|@vmodules" .
 
    -prod
-      Compiles the executable in production mode where most optimizations are enabled.
+      Compile the executable in production mode where most optimizations are enabled.
 
    -prof, -profile
-      Compiles the executable with all functions profiled.
+      Compile the executable with all functions profiled.
 
    -stats
       Enable more detailed statistics reporting, while compiling test files.
@@ -81,7 +81,7 @@ The build flags are shared by the build and run commands:
       assertions were made, how many tests passed/failed and so on.
 
    -translated
-      Enables features that are discouraged in regular V code but required for translated V code.
+      Enable features that are discouraged in regular V code but required for translated V code.
 
    -v, -vv, -vvv
       Enable varying verbosity in the V compiler while compiling

cmd/v/internal/help/default.txt

@@ -4,28 +4,28 @@ Usage:
    v [options] [command] [arguments]
 
 Examples:
-   v hello.v         compile the file `hello.v` and output it as `hello` or `hello.exe`
+   v hello.v         Compile the file `hello.v` and output it as `hello` or `hello.exe`.
-   v run hello.v     same as above but also run the produced executable immediately after compilation
+   v run hello.v     Same as above but also run the produced executable immediately after compilation.
-   v -o h.c hello.v  translate `hello.v` to `h.c` . Do not compile further.
+   v -o h.c hello.v  Translate `hello.v` to `h.c` . Do not compile further.
 
 The commands are:
-   build             build V code in the provided path (default)
+   build             Build V code in the provided path (default).
-   create            setup the file structure for a V project
+   create            Setup the file structure for a V project.
-   doc               generates the documentation for a V module (coming soon in 0.3)
+   doc               Generates the documentation for a V module (coming soon in 0.3).
-   fmt               format the V code provided
+   fmt               Format the V code provided.
-   repl              run the REPL
+   repl              Run the REPL.
-   run               compile and run a V program
+   run               Compile and run a V program.
-   symlink           create a symbolic link for V
+   symlink           Create a symbolic link for V.
-   test              run all test files in the provided directory
+   test              Run all test files in the provided directory.
-   translate         translate C code to V (coming soon in 0.3)
+   translate         Translate C code to V (coming soon in 0.3).
-   up                run the V self-updater
+   up                Run the V self-updater.
-   self              run the V self-compiler
+   self              Run the V self-compiler.
-   version           prints the version text and exits
+   version           Print the version text and exits.
 
-   install           installs a module from VPM
+   install           Install a module from VPM.
-   remove            removes a module that was installed from VPM
+   remove            Remove a module that was installed from VPM.
-   search            searches for a module from VPM
+   search            Search for a module from VPM.
-   update            updates an installed module from VPM
+   update            Update an installed module from VPM.
 
 Use "v help <command>" for more information about a command, example: `v help build`
 Use "v help other" to see less frequently used commands.

cmd/v/internal/help/fmt.txt

@@ -4,11 +4,11 @@ Usage:
 Formats the given V source files, then prints their formatted source to stdout.
 
 Options:
-  -c    check if file is already formatted.
+  -c    Check if file is already formatted.
         If it is not, print filepath, and exit with code 2.
-  -diff display only diffs between the formatted source and the original source.
+  -diff Display only diffs between the formatted source and the original source.
-  -l    list files whose formatting differs from vfmt.
+  -l    List files whose formatting differs from vfmt.
-  -w    write result to (source) file(s) instead of to stdout.
+  -w    Write result to (source) file(s) instead of to stdout.
   -2    Use the new V parser/vfmt. NB: this is EXPERIMENTAL for now.
           The new vfmt is much faster and more forgiving.
           It also may EAT some of your code for now.

cmd/v/internal/help/install.txt

@@ -2,6 +2,6 @@ Usage:
   v install module [module] [module] [...]
   ^^^^^^^^^^^^^ will install the modules you specified
 Options:
-  -help        - Show usage info
+  -help        - Show usage info.
-  -verbose     - Print more details about the performed operation
+  -verbose     - Print more details about the performed operation.
   -server-url  - When doing network operations, use this vpm server. Can be given multiple times.

cmd/v/internal/help/other.txt

@@ -1,14 +1,14 @@
 These are utility commands that you can also launch through v,
 but which are used less frequently by users:
 
-   bin2v             convert a binary file to a v source file, 
+   bin2v             Convert a binary file to a v source file,
-                     that can be later embedded in a module or program
+                     that can be later embedded in a module or program.
 
-   build-examples    test if all examples can be built
+   build-examples    Test if all examples can be built.
-   build-tools       test if all tools can be built
+   build-tools       Test if all tools can be built.
-   build-vbinaries   test if V can be built with different configuration
+   build-vbinaries   Test if V can be built with different configuration.
-   test-fmt          test if all files in the current directory is formatted properly
+   test-fmt          Test if all files in the current directory is formatted properly.
-   test-compiler     test if V is working properly by running all tests, including the compiler ones 
+   test-compiler     Test if V is working properly by running all tests, including the compiler ones.
                      NB: this can take a minute or two to run
 
-   setup-freetype    setup thirdparty freetype on Windows
+   setup-freetype    Setup thirdparty freetype on Windows.

cmd/v/internal/help/remove.txt

@@ -4,6 +4,6 @@ Usage:
  b) v remove
     ^^^^^^^^^^^^ will remove ALL installed modules
 Options:
-  -help        - Show usage info
+  -help        - Show usage info.
-  -verbose     - Print more details about the performed operation
+  -verbose     - Print more details about the performed operation.
   -server-url  - When doing network operations, use this vpm server. Can be given multiple times.

cmd/v/internal/help/run.txt

@@ -3,7 +3,7 @@ Usage: v [build flags] run <file.v|directory> [arguments...]
 This command is equivalent to running `v build` and running the compiled executable.
 The executable is passed the arguments as provided in [arguments...].
 
-The exit status of Run will be:
+The exit status of run will be:
 * `1` if the compilation failed.
 * The exit code of the compiled executable otherwise.
 

cmd/v/internal/help/search.txt

@@ -3,6 +3,6 @@ Usage:
   ^^^^^^^^^^^^^^^^^ will search https://vpm.vlang.io/ for matching modules,
                     and will show details about them
 Options:
-  -help        - Show usage info
+  -help        - Show usage info.
-  -verbose     - Print more details about the performed operation
+  -verbose     - Print more details about the performed operation.
   -server-url  - When doing network operations, use this vpm server. Can be given multiple times.

cmd/v/internal/help/update.txt

@@ -1,9 +1,9 @@
 Usage:
  a) v update module [module] [module] [...]
-    ^^^^^^^^^^^^ will update the listed modules to their latest versions
+    ^^^^^^^^^^^^ will update the listed modules to their latest versions.
  b) v update
-    ^^^^^^^^^^^^ will update ALL installed modules to their latest versions
+    ^^^^^^^^^^^^ will update ALL installed modules to their latest versions.
 Options:
-  -help        - Show usage info
+  -help        - Show usage info.
-  -verbose     - Print more details about the performed operation
+  -verbose     - Print more details about the performed operation.
   -server-url  - When doing network operations, use this vpm server. Can be given multiple times.