Update app.py

app.py

@@ -13,7 +13,7 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
     #Keep this format for the description / args / args description but feel free to modify the tool
     """A tool that does nothing yet 
     Args:
-        arg1: the first argument
+        arg1: the first arguments
         arg2: the second argument
     """
     return "What magic will you build ?"