Link demo to paper page

Hi,

This PR makes sure the demo can be found from https://huggingface.co/papers/2404.06425.

Cheers!

README.md

@@ -10,4 +10,6 @@ pinned: false
 short_description: Zero-Shot Material Transfer from a Single Image
 ---
 
-Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
+Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
+
+Paper page: https://huggingface.co/papers/2404.06425