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 sayHi(name: str) -> str:
+def say_hi(name: str) -> str:
     """A tool that say Hi to name
     Args:
         name: one of pepole's name