Fix broken link in security chapter

iboved · wouterj · commit 12df567be15a · 2015-04-16T19:52:18.000+02:00
diff --git a/book/security.rst b/book/security.rst
@@ -1000,7 +1000,7 @@ the User object, and use the ``isGranted`` method (or
 Retrieving the User in a Template
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-In a Twig Template this object can be accessed via the `app.user <reference-twig-global-app>`_
+In a Twig Template this object can be accessed via the :ref:`app.user <reference-twig-global-app>`
 key:
 
 .. configuration-block::
