Update app.py

app.py

@@ -10,7 +10,7 @@ from Gradio_UI import GradioUI
 
 
 @tool
-def dev_jokes(jokes:[str])-> str: #it's import to specify the return type
+def dev_jokes(jokes:str)-> str: #it's import to specify the return type
     """A tool that takes a list of dev jokes ad just display them to the user 
     Args:
         jokes: A list of jokes