fixed a reference

Author: fabpot

book/internals.rst

@@ -856,6 +856,8 @@ be called.
 .. index::
  single: Profiler
 
+.. _internals-profiler:
+
 Profiler
 --------
 

cookbook/profiler/data_collector.rst

@@ -4,7 +4,7 @@
 How to create a custom Data Collector
 =====================================
 
-The Symfony2 :doc:`Profiler </book/internals/profiler>` delegates data
+The Symfony2 :ref:`Profiler <internals-profiler>` delegates data
 collecting to data collectors. Symfony2 comes bundled with a few of them, but
 you can easily create your own.