minor #12137 Fix path (OskarStark)

This PR was merged into the 4.3 branch.

Discussion
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Fix path

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Commits
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7c1551a Fix path

Author: OskarStark

reference/configuration/framework.rst

@@ -1210,14 +1210,14 @@ Unlike the other session options, ``cache_limiter`` is set as a regular
 
     .. code-block:: yaml
 
-        # app/config/services.yml
+        # config/services.yaml
         parameters:
             session.storage.options:
                 cache_limiter: 0
 
     .. code-block:: xml
 
-        <!-- app/config/services.xml -->
+        <!-- config/services.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <container xmlns="http://symfony.com/schema/dic/services"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
@@ -1233,7 +1233,7 @@ Unlike the other session options, ``cache_limiter`` is set as a regular
 
     .. code-block:: php
 
-        // app/config/services.php
+        // config/services.php
         $container->setParameter('session.storage.options', [
             'cache_limiter' => 0,
         ]);