fix coffee_drinking_permission docstring

app.py

@@ -13,8 +13,8 @@ def coffee_drinking_permission(hour:int, day:int)-> bool: #it's import to specif
     #Keep this format for the description / args / args description but feel free to modify the tool
     """A tool that decides whether it is allowed to drink coffee for user at this time or not.
     Args:
-        arg1: time hour (in 24h format)
-        arg2: the day of the week
+        hour: time hour (in 24h format)
+        day: the day of the week
     """
     if day.lower() in ('saturday', 'sunday'):
         return False