Update UI of the three demos: faqGen, VisualQnA, and DocSum. (#1528)

Signed-off-by: WenjiaoYue <wenjiao.yue@intel.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

DocSum/ui/gradio/docsum_ui_gradio.py

@@ -296,8 +296,8 @@ class DocSumUI:
                     audio_ui.render()
                 with gr.TabItem("Upload Video"):
                     video_ui.render()
-                with gr.TabItem("Enter URL"):
-                    url_ui.render()
+                # with gr.TabItem("Enter URL"):
+                #     url_ui.render()
 
         return self.demo