Fix automatic generation of Zenodo DOI
I have received a reply from Zenodo support:
> We are currently investigating and fixing this issue related to GitHub releases. As soon as we have solved it we will reach back to you. Other repo maintainers had the same problem with Zenodo. 

There is an open issue on their GitHub repo: zenodo/zenodo#2181 I have received the following request from Zenodo support:
> Could you send us the link to the repository as well as the release tag?

My reply:
> Sure, here it is:
> - Link to the repository: https://github.com/huggingface/datasets
> - Link to the repository at the release tag: https://github.com/huggingface/datasets/releases/tag/1.8.0
> - Release tag: 1.8.0 Zenodo issue has been fixed. The 1.8.0 release DOI can be found here: https://zenodo.org/record/4946100#.YMd6vKj7RPY
After the last release of Datasets (1.8.0), the automatic generation of the Zenodo DOI failed: it appears in yellow as "Received", instead of in green as "Published".

I have contacted Zenodo support to fix this issue.

TODO:
- [x] Check with Zenodo to fix the issue
- [x] Check BibTeX entry is right