Update app.py

fixed missing comma

app.py

@@ -62,12 +62,12 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-        tools=[
+    tools=[
         final_answer,
         image_generation_tool,
         get_current_time_in_timezone,  # even though it's decorated
         my_custom_tool                 # same here
-    ]
+    ],
     max_steps=6,
     verbosity_level=1,
     grammar=None,