Minor adjustment to settings docs

docs/reference/contrib/settings.rst

@@ -118,6 +118,8 @@ Then access the settings through ``{{ settings }}``:
 
     {{ settings.app_label.SocialMediaSettings.instagram }}
 
+(Replace ``app_label`` with the label of the app containing your settings model.)
+
 If you are not in a ``RequestContext``, then context processors will not have run, and the ``settings`` variable will not be availble. To get the ``settings``, use the provided ``{% get_settings %}`` template tag. If a ``request`` is in the template context, but for some reason it is not a ``RequestContext``, just use ``{% get_settings %}``:
 
 .. code-block:: html+django