Merge branch '6.4' into 7.0

* 6.4:
  doc: Update configuration.rst

Author: javiereguiluz

configuration.rst

@@ -1267,14 +1267,14 @@ namespace ``Symfony\Config``::
         $security->firewall('main')
             ->pattern('^/*')
             ->lazy(true)
-            ->anonymous();
+            ->security(false);
 
         $security
             ->roleHierarchy('ROLE_ADMIN', ['ROLE_USER'])
             ->roleHierarchy('ROLE_SUPER_ADMIN', ['ROLE_ADMIN', 'ROLE_ALLOWED_TO_SWITCH'])
             ->accessControl()
                 ->path('^/user')
-                ->role('ROLE_USER');
+                ->roles('ROLE_USER');
 
         $security->accessControl(['path' => '^/admin', 'roles' => 'ROLE_ADMIN']);
     };