Update quickstart.md (#9185)

add .order_by() to eliminate Pagination UnorderedObjectListWarning

Author: geomat0101

docs/tutorial/quickstart.md

@@ -105,7 +105,7 @@ Right, we'd better write some views then.  Open `tutorial/quickstart/views.py` a
         """
         API endpoint that allows groups to be viewed or edited.
         """
-        queryset = Group.objects.all()
+        queryset = Group.objects.all().order_by('name')
         serializer_class = GroupSerializer
         permission_classes = [permissions.IsAuthenticated]