update readme

Author: zamronypj

README.md

@@ -73,8 +73,7 @@ end.
 ```
 
 Open URL http://localhost/test.pas from Internet browser, you should see text `Hello from Pascal` printed in browser.
-
-If `test.pas` is downloaded then you do not register mod_pascal with Apache correctly.
+If you do not see text, [something is wrong](https://zamronypj.github.io/mod_pascal/#things-can-go-wrong).
 
 ## Versioning
-mod_pascal follow [Semantic Versioning 2.0](https://semver.org/)
+mod_pascal follows [Semantic Versioning 2.0](https://semver.org/)