minor #14165 Update voters.rst (94noni)

This PR was merged into the 4.4 branch.

Discussion
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Update voters.rst

Map path file as code example below at the `Checking for Access in a Controller` part

Commits
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8afdf41 Update voters.rst

Author: javiereguiluz

security/voters.rst

@@ -13,9 +13,10 @@ However, if you don't reuse permissions or your rules are basic, you can always
 put that logic directly into your controller instead. Here's an example how
 this could look like, if you want to make a route accessible to the "owner" only::
 
-    // src/AppBundle/Controller/PostController.php
+    // src/Controller/PostController.php
     // ...
 
+    // inside your controller action
     if ($post->getOwner() !== $this->getUser()) {
         throw $this->createAccessDeniedException();
     }