fixing special shortcut syntax

Author: raulconti

book/controller.rst

@@ -492,8 +492,8 @@ The Symfony templating engine is explained in great detail in the
 .. sidebar:: Templating Naming Pattern
 
     You can also put templates in the ``Resources/views`` directory of a bundle and
-    reference them with a special shortcut syntax like ``@AppBundle/Hello/index.html.twig``
-    or ``@AppBundle/layout.html.twig``. These would live in at ``Resources/views/Hello/index.html.twig``
+    reference them with a special shortcut syntax like ``@App/Hello/index.html.twig``
+    or ``@App/layout.html.twig``. These would live in at ``Resources/views/Hello/index.html.twig``
     and ``Resources/views/layout.html.twig`` inside the bundle respectively.
 
 .. index::