Fix missing tags in dataset cards
_The documentation is not available anymore as the PR was closed or merged._
Fix missing tags in dataset cards:
- eraser_multi_rc
- hotpot_qa
- metooma
- movie_rationales
- qanta
- quora
- quoref
- race
- ted_hrlr
- ted_talks_iwslt

This PR partially fixes the missing tags in dataset cards. Subsequent PRs will follow to complete this task.

Related to:
- #4833
- #4891
- #4896
- #4908