Fixed #9236 -- Added documentation on the dependencies of the admin.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@11543 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/ref/contrib/admin/index.txt

@@ -27,19 +27,24 @@ Overview
 
 There are five steps in activating the Django admin site:
 
-    1. Add ``django.contrib.admin`` to your ``INSTALLED_APPS`` setting.
+    1. Add :class:``django.contrib.admin`` to your :setting:``INSTALLED_APPS``
+       setting.
 
-    2. Determine which of your application's models should be editable in the
+    2. Admin has two dependencies - :class:``django.contrib.auth`` and
+       :class:``django.contrib.contenttypes``. If these applications are not
+       in your :setting:``INSTALLED_APPS`` list, add them.
+
+    3. Determine which of your application's models should be editable in the
        admin interface.
 
-    3. For each of those models, optionally create a ``ModelAdmin`` class that
+    4. For each of those models, optionally create a ``ModelAdmin`` class that
        encapsulates the customized admin functionality and options for that
        particular model.
 
-    4. Instantiate an ``AdminSite`` and tell it about each of your models and
+    5. Instantiate an ``AdminSite`` and tell it about each of your models and
        ``ModelAdmin`` classes.
 
-    5. Hook the ``AdminSite`` instance into your URLconf.
+    6. Hook the ``AdminSite`` instance into your URLconf.
 
 Other topics
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