Update prompts.yaml

prompts.yaml

@@ -320,6 +320,7 @@
     Here is the final answer from your managed agent '{{name}}':
     {{final_answer}}
 
-  "final_answer": |
-  You have completed the task. Now return the final answer using this tool.  
-  Use this to return your conclusion to the user.
+"final_answer": 
+  "task": |-
+    You have completed the task. Now return the final answer using this tool.  
+    Use this to return your conclusion to the user.