Replace commit sha by commit url for update jobs (#14852)

* Replace commit sha by commit url for update jobs

* Typo

* Update .github/workflows/build_documentation.yml

Co-authored-by: Julien Chaumond <julien@huggingface.co>

* Apply review comments

Co-authored-by: Julien Chaumond <julien@huggingface.co>

utils/update_metadata.py

@@ -221,7 +221,13 @@ def update_metadata(token, commit_sha):
         if repo.is_repo_clean():
             print("Nothing to commit!")
         else:
-            commit_message = f"Update with commit {commit_sha}" if commit_sha is not None else "Update"
+            if commit_sha is not None:
+                commit_message = (
+                    f"Update with commit {commit_sha}\n\nSee: "
+                    f"https://github.com/huggingface/transformers/commit/{commit_sha}"
+                )
+            else:
+                commit_message = "Update"
             repo.push_to_hub(commit_message)