Update Controller_CoderFlow.yaml

Controller_CoderFlow.yaml

@@ -93,6 +93,8 @@ system_message_prompt_template:
             3.4 Call `update_plan` with the plan you just generated.
           4. Proceed to the next step of the plan, go back to workflow 1 or 2.
           5. When every step of the plan is done, call the `finish` command, with a summary of what was done.
+
+          **You MUST call `update_plan` whenever you realize one step of the plan is done.**
           
           Here is an example of execution:  
           ### Beginning of an example execution: ###