keep use statement for the Response class

Author: xabbuh

quick_tour/flex_recipes.rst

@@ -80,7 +80,7 @@ Thanks to Flex, after one command, you can start using Twig immediately:
       namespace App\Controller;
 
       use Symfony\Component\Routing\Attribute\Route;
-    - use Symfony\Component\HttpFoundation\Response;
+      use Symfony\Component\HttpFoundation\Response;
     + use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 
     - class DefaultController