Update prompts.yaml

prompts.yaml

@@ -300,14 +300,15 @@
 
     Now write your new plan below.
 
-"final_answer": |-
-  <s>[INST] <<SYS>>
-  You have reached the final step. Return the answer using the `final_answer` tool.
-  - The content must be inside the tags <answer></answer>.
-  - Be concise and direct.
-  <</SYS>>
-  {input} [/INST]
-  <answer>{answer}</answer>
+final_answer:
+  pre_messages: |-
+    <s>[INST] <<SYS>>
+    You have reached the final step. Return the answer using the `final_answer` tool.
+    - The content must be inside the tags <answer></answer>.
+    - Be concise and direct.
+    <</SYS>>
+    {input} [/INST]
+    <answer>{answer}</answer>
 
 "managed_agent":
   "task": |-