Update app.py

app.py

@@ -21,7 +21,7 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
 
 @tool
 def add_two_numbers(a:int, b:int)-> int: #it's import to specify the return type
-    """A tool adds two integer numbers and returns the result 
+    """A tool that says hello
     Args:
         a: first integer number
         b: second integer number