fix: correct DuckDuckGo 2

app.py

@@ -56,7 +56,7 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-    tools=[final_answer, get_current_time_in_timezone, DuckDuckGoSearchTool], ## add your tools here (don't remove final answer)
+    tools=[final_answer, get_current_time_in_timezone, duckduckgo_tool], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,
     grammar=None,