Update app.py

Fixing typo in docstring

app.py

@@ -18,13 +18,12 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
     """
     return "What magic will you build ?"
 
-# Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
 def get_feel_good_msg(need_feel_good_msg:bool)-> str: 
     #Keep this format for the description / args / args description but feel free to modify the tool
     """A tool that does nothing yet 
     Args:
-        need_feel_godd_msg: A boolean that says deliver a feel good message
+        need_feel_good_msg: A boolean that says deliver a feel good message
     """
     if need_feel_good_msg:
         return "Cheer up. It is always darkest before the dawn"