Update app.py

app.py

@@ -15,7 +15,7 @@ def execute_python_code(func: str, func_args: Dict[str, str])-> str: #it's impor
     """A tool prints out hello world
     Args:
         func: the function to call
-        func_arg: list of function arguments
+        func_args: list of function arguments
     """
     
     return PythonInterpreterTool(f"('hello world')")