feat: fix typo

app.py

@@ -8,6 +8,6 @@ demo = gr.Interface(fn=greet, inputs=["text","slider"], outputs="text")
 def chatinterface_fn(message,history):
     return f"{message} return"
 
-gr.chatInterface(chatinterface_fn).launch()
+gr.ChatInterface(chatinterface_fn).launch()
 
 demo.launch()