Update whichframe.py

whichframe.py

@@ -298,4 +298,5 @@ st.markdown("---")
 st.markdown(
     "By [David Chuan-En Lin](https://chuanenlin.com/). "
     "Play with the code at [https://github.com/chuanenlin/whichframe](https://github.com/chuanenlin/whichframe)."
+    "v2 code with better interface and model at [https://github.com/chuanenlin/whichframe-v2](https://github.com/chuanenlin/whichframe-v2)."
 )