Fixed the default value for toolbar configuration

Author: nicosomb

reference/configuration/web_profiler.rst

@@ -23,7 +23,7 @@ Configuration
 toolbar
 ~~~~~~~
 
-**type**: ``boolean`` **default**: ``true``
+**type**: ``boolean`` **default**: ``false``
 
 It enables and disables the toolbar entirely. Usually you set this to ``true``
 in the ``dev`` and ``test`` environments and to ``false`` in the ``prod``