Updated README and docs with ESM-1b and ESM-2 separately
# Improve ESM documentation
We split out the papers for ESM-1b and ESM-2 separately, and improve the documentation of esm model_doc.


## Before submitting
- [x] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).

## Who can review?
@Rocketknight1 

_The documentation is not available anymore as the PR was closed or merged._<|||||>Hi @tomsercu! I checked with other team members and we prefer to have only one entry in the list per model class (which would include ESM-1b as well as ESM-2), but it's totally okay to have a longer entry that includes the citations for ESM-1b and ESM-2, and optionally ESM-1v as well.<|||||>Gotcha that makes sense @Rocketknight1 , updated to a single entry in all 5 places. Lmk if this is too much :D <|||||>@tomsercu Don't worry, we have some scripts to handle the copies, so you only have to worry about the English one! I'll run them now and see if I can get these tests to pass.<|||||>Remaining issues seem to just be from the specific commit this was branched from - will merge into my PR and hopefully they'll go away. Thanks for this!