Update message, because multiple controller nodes can be created.

Author: david-cattermole

python/mmSolver/tools/createcontroller2/ui/createcontroller_layout.py

@@ -257,7 +257,7 @@ def create_controller_button_clicked(self):
             smart_bake,
             camera)
         cmds.select(controller_nodes, replace=True)
-        LOG.warn('Success: Create Controller.')
+        LOG.warn('Success: Create Controllers.')
 
     def reset_options(self):
         # reset widgets to default