Fixed #17705 - Updated TabularInline image and doc in tutorial 2.

Thanks xbito for the draft patch.

docs/intro/tutorial02.txt

@@ -322,9 +322,12 @@ the ``ChoiceInline`` declaration to read::
 With that ``TabularInline`` (instead of ``StackedInline``), the
 related objects are displayed in a more compact, table-based format:
 
-.. image:: _images/admin12.png
+.. image:: _images/admin12t.png
    :alt: Add poll page now has more compact choices
 
+Note that there is an extra "Delete?" column that allows removing rows added
+using the "Add Another Choice" button and rows that have already been saved.
+
 Customize the admin change list
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