Updated example for clarity

The second point is missleading in my opinion.
I thought this has to be put into app/http/controllers and used in a route later on.

Putting this into the controllers folder will throw a "not exist" error - not a big issue but still something you can prevent with a little extra info.

docs/authorization-server/password.md

@@ -11,7 +11,7 @@
     ]
     ```
 
-2. Create a class with a `verify` method where you check if the provided user is a valid one.
+2. Create a class with a `verify` method where you check if the provided user is a valid one. In the following example you have to create a `PasswordGrantVerifier.php` in your `app` folder.
 
     ```php
     namespace App;