Update forwarding.rst

Author: 94noni

controller/forwarding.rst

@@ -13,8 +13,10 @@ Instead of redirecting the user's browser, this makes an "internal" sub-request
 and calls the defined controller. The ``forward()`` method returns the
 :class:`Symfony\\Component\\HttpFoundation\\Response` object that is returned
 from *that* controller::
+    
+    // src/Controller/OneController.php
 
-    public function index($name)
+    public function index($name): Response
     {
         $response = $this->forward('App\Controller\OtherController::fancy', [
             'name'  => $name,
@@ -29,7 +31,9 @@ from *that* controller::
 The array passed to the method becomes the arguments for the resulting controller.
 The target controller method might look something like this::
 
-    public function fancy($name, $color)
+    // src/Controller/OtherController.php
+
+    public function fancy(string $name, string $color): Response
     {
         // ... create and return a Response object
     }