tutorial: minor fixes

tutorials/building-a-simple-web-blog-with-vweb.md

@@ -81,7 +81,11 @@ Run it with
 v run blog.v
 ```
 
-and open http://localhost:8080/ in your browser:
+```
+Running a Vweb app on http://localhost:8080 ...
+```
+
+Vweb helpfully provided a link, open http://localhost:8080/ in your browser:
 
 <img width=662 src="https://github.com/vlang/v/blob/master/tutorials/hello.png?raw=true)">
 

vlib/vweb/vweb.v

@@ -124,7 +124,7 @@ fn (ctx &Context) get_header(key string) string {
 
 //pub fn run<T>(port int) {
 pub fn run<T>(app mut T, port int) {
-	println('Running vweb app on http://localhost:$port ...')
+	println('Running a Vweb app on http://localhost:$port ...')
 	l := net.listen(port) or { panic('failed to listen') }
 	//mut app := T{}
 	app.init()