Fixed #9675: added note about upgrading the URLconf to the comment upgrade guide.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10746 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/ref/contrib/comments/upgrade.txt

@@ -26,6 +26,15 @@ The main changes from the old system are:
       new comment, and ``{% render_comment_form %}``, which renders said form
       using the ``comments/form.html`` template.
       
+    * The way comments are include in your URLconf have changed; you'll need to
+      replace::
+    
+            (r'^comments/', include('django.contrib.comments.urls.comments')),
+      
+      with::
+
+            (r'^comments/', include('django.contrib.comments.urls')),
+
 Upgrading data
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