Change id of BibLaTeX translator

 to that of the official translator which is now included in the repository.

The BibLaTeX translator have been included in the official repository with a different id, but my translator with the old id is still available here and might be interesting to some people since it contains a few extra "features":
https://github.com/andersjohansson/zotero-biblatex-translator

But if people use that one they can customize `zotelo-translators` to add it.