Fix argument desc

app.py

@@ -15,7 +15,7 @@ def sunrise_sunset_tool(lat:str, lng:str)-> str: #it's import to specify the ret
     """A tool that returns sunrise and sunset times for location specified by latitude and longitude
     Args:
         lat: A string representing location latitude
-        long: A string representing location longitude
+        lng: A string representing location longitude
     """
     try:
         sunrise = "7:27:02 AM"