update code snippet

app.py

@@ -91,12 +91,12 @@ To get your TURN credentials, run the following code:
 
 
 ```python
-from gradio_webrtc import get_turn_credentials, WebRTC
+from gradio_webrtc import get_hf_turn_credentials, WebRTC
 
 
 # Pass a valid access token for your Hugging Face account
 # or set the HF_TOKEN environment variable 
-credentials = get_turn_credentials(token=None)
+credentials = get_hf_turn_credentials(token=None)
 
 with gr.Blcocks() as demo:
     webrtc = WebRTC(rtc_configuration=credentials)