Modified r11531 to use the original suggested text from the patch (which was better).

git-svn-id: http://code.djangoproject.com/svn/django/trunk@11532 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/topics/http/shortcuts.txt

@@ -147,7 +147,7 @@ will be returned::
 ``get_object_or_404``
 =====================
 
-.. function:: get_object_or_404(Model, *args, **kwargs)
+.. function:: get_object_or_404(klass, *args, **kwargs)
 
    Calls :meth:`~django.db.models.QuerySet.get()` on a given model manager,
    but it raises ``django.http.Http404`` instead of the model's