Update app.py

app.py

@@ -239,7 +239,7 @@ with gr.Blocks(css="""#chatbot { font-size: 14px; min-height: 800px; }""") as de
         with gr.Group():
             gr.Markdown(f'<p style="text-align:center">Get your Open AI API key <a href="https://platform.openai.com/account/api-keys">here</a></p>')
             openAI_key = gr.Textbox(label='Enter your OpenAI API key here', password=True)
-            url = gr.Textbox(label='Enter PDF URL here')
+            url = gr.Textbox(label='Enter PDF URL here   (Example: https://arxiv.org/pdf/1706.03762.pdf )')
             gr.Markdown("<center><h4>OR<h4></center>")
             file = gr.File(label='Upload your PDF/ Research Paper / Book here', file_types=['.pdf'])
             question = gr.Textbox(label='Enter your question here')