Update app.py

app.py

@@ -9,7 +9,7 @@ from Gradio_UI import GradioUI
 
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-    def my_custom_tool(a:float, b:float)-> float: #it's import to specify the return type
+def my_custom_tool(a:float, b:float)-> float: #it's import to specify the return type
     """A tool that combines tow args 
     Args:
         a: the first argument