docs: fix a typo

cmd/v/help/build-c.txt

@@ -81,7 +81,7 @@ see also `v help build`.
          __exit(code int)
             Exit with code code. code is allowed to be ignored.
 
-         The module decleration should be `builtin`. The default Linux
+         The module declaration should be `builtin`. The default Linux
          implementation can be found in `vlib/builtin/linux_bare`.
 
    -os <os>, -target-os <os>

vlib/v/eval/eval.v

@@ -186,12 +186,12 @@ pub fn (mut e Eval) register_symbol(stmt ast.Stmt, mod string, file string) {
 					}
 				}
 				else {
-					e.error('unknown decleration expression statement $x.type_name()')
+					e.error('unknown declaration expression statement $x.type_name()')
 				}
 			}
 		}
 		else {
-			e.error('unhandled decleration statement $stmt.type_name()')
+			e.error('unhandled declaration statement $stmt.type_name()')
 		}
 	}
 }

vlib/v/parser/tests/interface_duplicate_interface_method.vv

@@ -1,4 +1,4 @@
-// duplicate interface methods in decleration
+// duplicate interface methods in declaration
 interface Abc {
 	fun()
 	fun()