Update app.py

app.py

@@ -31,7 +31,7 @@ def get_current_time_in_timezone(timezone: str):
     Args:
         timezone: A string representing a valid timezone (e.g., 'America/New_York')
     
-    Returns: The current local time in the following format ("%Y-%m-%d %H:%M:%S")
+    Returns: The current local time in the following format %Y-%m-%d %H:%M:%S (e.g., '2015-09-14 04:20:00')
     """
     try:
         # Create timezone object