Update prompts.yaml

prompts.yaml

@@ -1,9 +1,14 @@
 final_answer:
   pre_messages: |-
-    You have completed your reasoning. Now clearly and concisely write ONLY the final answer to the task below. 
-    No explanations. No additional outputs. Just the final answer.
-  post_messages: |-
-    Thank you for providing the final answer.
+    You have completed all reasoning. Now return only the final answer value by calling the `final_answer` tool.
+    Do not say "Final answer is...", do not wrap it in a sentence or quotation. Just return the final answer using the tool.
+
+    Example:
+    ```py
+    final_answer("42")
+    ```<end_code>
+  post_messages: ""
+
 
 
 "system_prompt": |-
@@ -58,7 +63,7 @@ final_answer:
   translated_question = translator(question=question, src_lang="French", tgt_lang="English")
   print(f"The translated question is {translated_question}.")
   answer = image_qa(image=image, question=translated_question)
-  final_answer(f"The answer is {answer}")
+  final_answer(answer)
   ```<end_code>
 
   ---