Add missing `revision` argument
The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_6191). All of your documentation changes will be reflected on that endpoint.
I've noticed that when you're not working on the main branch, there are sometimes errors in the files returned. After some investigation, I realized that the revision was not properly passed  everywhere. This PR proposes a fix.