Edited arg description

app.py

@@ -12,7 +12,7 @@ from Gradio_UI import GradioUI
 def get_weather(city:str)-> str:
     """A tool that fetches the current weather for a given city using the wttr.in API. 
     Args:
-        city: The name of the city (e.g., 'Berlin', 'New York').
+        city: A string representing the name of a city (e.g., 'Berlin', 'New York').
     """
     try:
         url = f"https://wttr.in/{city}?format=3"  # compact 'City: weather'