update video URL info

app.py

@@ -348,7 +348,7 @@ with gr.Blocks() as demo:
     
     with gr.Row():
         with gr.Column(scale=4):
-            url = gr.Textbox(label="Enter YouTube video URL here:",placeholder="https://www.youtube.com/watch?v=",info="The video must not be age-restricted. Otherwise, the transcription will fail.")
+            url = gr.Textbox(label="Enter YouTube video URL here:",placeholder="https://www.youtube.com/watch?v=",info="The video must not be age-restricted. Otherwise, the transcription will fail. The demo supports videos in English language only.")
         with gr.Column(scale=1):
             api_token = gr.Textbox(label="Paste your Hugging Face API token here (Optional):",placeholder="hf_...",visible=True,show_label=True,info='The API token passed via this field is not stored. It is only passed through the Hugging Face Hub API for inference.')
         with gr.Column(scale=1):