Update prompts.yaml

prompts.yaml

@@ -9,13 +9,13 @@
   These print outputs will then appear in the 'Observation:' field, which will be available as input for the next step.
   In the end you have to return a final answer using the `final_answer` tool.
 
-
-Thought: I will now search the web using DuckDuck Go 
+Example (format only):
+  Thought: I will now search the web using DuckDuckGo.
   Code:
-  py
+  ```py
   results = get_search_results("this is my search text", 5)
   print(results)
-  <end_code>
+  ```<end_code>
 
   Here are a few examples using notional tools:
   ---