Update app.py

app.py

@@ -10,7 +10,15 @@ from Gradio_UI import GradioUI
 #Marathon training plan
 @tool
 def estimate_marathon_time(half_time: str) -> str:
-    """Estimates a full marathon time based on a given half-marathon time."""
+    """
+    Estimates a full marathon time based on a given half-marathon time.
+
+    Args:
+        half_time (str): The recorded half-marathon time in the format HH:MM.
+
+    Returns:
+        str: The estimated full marathon time in HH:MM format.
+    """
     try:
         hours, minutes = map(int, half_time.split(":"))
         total_minutes = hours * 60 + minutes