Update `use_auth_token` -> `token` in example scripts
# What does this PR do?

Update example scripts to use `token`.

We have `datasets!=2.5.0` in transformers, and I see `datasets=2.7.0` still only uses `use_auth_token`, so I don't touch the usage in `load_dataset`. Let me know if we should change to `token` + pin a higher minimum `datasets` version.

The files under `examples/research_projects` are not touched.
`use_auth_token` has been deprecated in favor of `token` in the latest release of `datasets` 🙂. <|||||>> `use_auth_token` has been deprecated in favor of `token` in the latest release of `datasets` 🙂.

Yes, I got to check it and update my comment :-)

But thanks a lot for the information. It's very nice.<|||||>_The documentation is not available anymore as the PR was closed or merged._