Update app.py

app.py

@@ -23,7 +23,9 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
 def mountain_color(height:int)-> str: 
     """A tool that gives the color of the mountain depending on its height
     Args:
-        height: the height of the mountain
+        height(int): the height of the mountain
+    Returns:
+        str: the color of the mountain
     """
     try:
         color = "green"