bug #32057 [HttpFoundation] Fix SA/phpdoc JsonResponse (ro0NL)

This PR was squashed before being merged into the 3.4 branch (closes #32057).

Discussion
----------

[HttpFoundation] Fix SA/phpdoc JsonResponse

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | #...   <!-- #-prefixed issue number(s), if any -->
| License       | MIT
| Doc PR        | symfony/symfony-docs#... <!-- required for new features -->

Commits
-------

270f10c [HttpFoundation] Fix SA/phpdoc JsonResponse

src/Symfony/Component/HttpFoundation/JsonResponse.php

@@ -55,10 +55,10 @@ public function __construct($data = null, $status = 200, $headers = [], $json =
      *
      * Example:
      *
-     *     return JsonResponse::create($data, 200)
+     *     return JsonResponse::create(['key' => 'value'])
      *         ->setSharedMaxAge(300);
      *
-     * @param mixed $data    The json response data
+     * @param mixed $data    The JSON response data
      * @param int   $status  The response status code
      * @param array $headers An array of response headers
      *
@@ -70,7 +70,18 @@ public static function create($data = null, $status = 200, $headers = [])
     }
 
     /**
-     * Make easier the creation of JsonResponse from raw json.
+     * Factory method for chainability.
+     *
+     * Example:
+     *
+     *     return JsonResponse::fromJsonString('{"key": "value"}')
+     *         ->setSharedMaxAge(300);
+     *
+     * @param string|null $data    The JSON response string
+     * @param int         $status  The response status code
+     * @param array       $headers An array of response headers
+     *
+     * @return static
      */
     public static function fromJsonString($data = null, $status = 200, $headers = [])
     {