Update front_controllers_and_kernel.rst

Author: lubo13

configuration/front_controllers_and_kernel.rst

@@ -244,15 +244,15 @@ the directory of the environment you're using (most commonly ``dev/`` while
 developing and debugging). While it can vary, the ``var/cache/dev/`` directory
 includes the following:
 
-``appDevDebugProjectContainer.php``
+``srcApp_KernelDevDebugContainer.php``
     The cached "service container" that represents the cached application
     configuration.
 
-``appDevUrlGenerator.php``
+``UrlGenerator.php``
     The PHP class generated from the routing configuration and used when
     generating URLs.
 
-``appDevUrlMatcher.php``
+``UrlMatcher.php``
     The PHP class used for route matching - look here to see the compiled regular
     expression logic used to match incoming URLs to different routes.