Fix doc string

app.py

@@ -24,7 +24,7 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
 def arxiv_fetch_paper_tool(arxiv_id : str) -> str:
     """ An Tool that would fetch research papers from ArXiV collection and parse it and return the PDF text
     Args:
-        arxiv_id : id for the arxiv paper
+        arxiv_id: id for the arxiv paper
     Returns:
     text of the paper content and title of the paper
     """
@@ -84,7 +84,7 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-    tools=[final_answer,arxiv_fetch_paper_tool], ## add your tools here (don't remove final answer)
+    tools=[final_answer,arxiv_fetch_paper_tool,image_generation_tool], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,
     grammar=None,