whoa, an actual typo!

app.py

@@ -50,7 +50,7 @@ def duplicate(source_url, preview_url, model_id, dst_repo, token, repo_type, nsf
                 path_in_repo=repopath,
                 repo_id=dst_repo,
                 repo_type="model",
-                commit_messgage=filename,
+                commit_message=filename,
                 commit_description=source_url+"\n\n![preview]("+preview_url+")",
                 create_pr=make_pr
         )