Update app.py

app.py

@@ -13,7 +13,7 @@ def my_custom_tool(arg1:str)-> str: #it's import to specify the return type
     #Keep this format for the description / args / args description but feel free to modify the tool
     """A tool that performs a search using DuckDuckGo
     Args:
-        query: The search query
+        query: A string representing the search query
     """
     return search_tool.search(query)