add link pointing to xinyu's demo

app.py

@@ -260,6 +260,8 @@ if __name__ == "__main__":
                 <b>Tag2Text Model + Grounded-SAM:</b> Upload your image to get the <b>tags and caption</b> (by Tag2Text) and <b>masks and boxes</b> (by Grounded-SAM)!
                 (Optional: Specify tags to get the corresponding caption.)
             </li>
+            <br>
+            Note: this demo may take up to minutes to inference. If you do not need masks and boxes, visit <a href='https://huggingface.co/spaces/xinyu1205/Recognize_Anything-Tag2Text/' target='_blank'>this demo</a>.
         """  # noqa
 
         article = """