[Routing] add missing action return hints

Add missing return hints

Author: mohamedGasmii

routing.rst

@@ -80,7 +80,7 @@ do so, create a :doc:`controller class </controller>` like the following:
             /**
              * @Route("/blog", name="blog_list")
              */
-            public function list()
+            public function list(): Response
             {
                 // ...
             }
@@ -97,7 +97,7 @@ do so, create a :doc:`controller class </controller>` like the following:
         class BlogController extends AbstractController
         {
             #[Route('/blog', name: 'blog_list')]
-            public function list()
+            public function list(): Response
             {
                 // ...
             }
@@ -1045,7 +1045,7 @@ optional ``priority`` parameter in those routes to control their priority:
              *
              * @Route("/blog/{slug}", name="blog_show")
              */
-            public function show(string $slug)
+            public function show(string $slug): Response
             {
                 // ...
             }
@@ -1055,7 +1055,7 @@ optional ``priority`` parameter in those routes to control their priority:
              *
              * @Route("/blog/list", name="blog_list", priority=2)
              */
-            public function list()
+            public function list(): Response
             {
                 // ...
             }
@@ -1075,7 +1075,7 @@ optional ``priority`` parameter in those routes to control their priority:
              * This route has a greedy pattern and is defined first.
              */
             #[Route('/blog/{slug}', name: 'blog_show')]
-            public function show(string $slug)
+            public function show(string $slug): Response
             {
                 // ...
             }
@@ -1084,7 +1084,7 @@ optional ``priority`` parameter in those routes to control their priority:
              * This route could not be matched without defining a higher priority than 0.
              */
             #[Route('/blog/list', name: 'blog_list', priority: 2)]
-            public function list()
+            public function list(): Response
             {
                 // ...
             }
@@ -2493,7 +2493,7 @@ session shouldn't be used when matching a request:
             /**
              * @Route("/", name="homepage", stateless=true)
              */
-            public function homepage()
+            public function homepage(): Response
             {
                 // ...
             }
@@ -2510,7 +2510,7 @@ session shouldn't be used when matching a request:
         class MainController extends AbstractController
         {
             #[Route('/', name: 'homepage', stateless: true)]
-            public function homepage()
+            public function homepage(): Response
             {
                 // ...
             }