does markdown work here? i hope so...

app.py

@@ -51,6 +51,7 @@ def duplicate(source_url, preview_url, model_id, dst_repo, token, repo_type, nsf
                 repo_id=dst_repo,
                 repo_type="model",
                 commit_messgage=filename,
+                commit_description=source_url+"\n\n![preview]("+preview_url+")",
                 create_pr=make_pr
         )