Update security.rst

The Phrenologist · web-flow · commit 71659493fc57 · 2019-05-09T15:11:58.000+02:00
diff --git a/best_practices/security.rst b/best_practices/security.rst
@@ -356,7 +356,7 @@ via the even easier shortcut in a controller::
         $this->denyAccessUnlessGranted('edit', $post);
 
         // use Symfony\Component\Security\Core\Exception\AccessDeniedException;
-        // use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface
+        // use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
         //
         // ...
         //
