Renamed admin doc image files to match the documentation they are for.

docs/ref/contrib/admin/actions.txt

@@ -18,7 +18,7 @@ action; Django ships with a "delete selected objects" action available to all
 models. For example, here's the user module from Django's built-in
 :mod:`django.contrib.auth` app:
 
-.. image:: _images/user_actions.png
+.. image:: _images/admin-actions.png
 
 .. warning::
 
@@ -134,7 +134,7 @@ the action and its registration would look like::
 
 That code will give us an admin change list that looks something like this:
 
-.. image:: _images/article_actions.png
+.. image:: _images/adding-actions-to-the-modeladmin.png
 
 That's really all there is to it! If you're itching to write your own actions,
 you now know enough to get started. The rest of this document just covers more
@@ -202,7 +202,7 @@ that the action was successful::
 This make the action match what the admin itself does after successfully
 performing an action:
 
-.. image:: _images/article_actions_message.png
+.. image:: _images/actions-as-modeladmin-methods.png
 
 Actions that provide intermediate pages
 ---------------------------------------

docs/ref/contrib/admin/index.txt

@@ -336,7 +336,7 @@ subclass::
 
     This results in an admin page that looks like:
 
-    .. image:: _images/flatfiles_admin.png
+    .. image:: _images/fieldsets.png
 
     If neither ``fieldsets`` nor :attr:`~ModelAdmin.fields` options are present,
     Django will default to displaying each field that isn't an ``AutoField`` and
@@ -802,7 +802,7 @@ subclass::
     Set ``list_filter`` to activate filters in the right sidebar of the change
     list page of the admin, as illustrated in the following screenshot:
 
-    .. image:: _images/users_changelist.png
+    .. image:: _images/list_filter.png
 
     ``list_filter`` should be a list or tuple of elements, where each element
     should be of one of the following types: