Removing "BibTeX" when not specific to BibTeX

[mlep]

Following JabRef/user-documentation#315 , "Generate groups from keywords in a BibTeX field" is changed to "Generate groups from keywords in the following field" (because it works for both BibTeX and biblatex fields).
Additional changes for similar issues

• Change in CHANGELOG.md described (if applicable)
• Tests created for changes (if applicable)
• Manually tested changed features in running JabRef (always required)
• Screenshots added in PR description (for UI changes)
• Checked documentation: Is the information available and up to date? If not created an issue at https://github.com/JabRef/user-documentation/issues or, even better, submitted a pull request to the documentation repository.
  (will update https://docs.jabref.org/finding-sorting-and-cleaning-entries/getbibtexdatafromdoi after merging)

[tobiasdiez]

Thanks, LGTM.

[calixtus]

markdown-lint is complaining: CHANGELOG.md:50:154 MD009/no-trailing-spaces Trailing spaces [Expected: 0 or 2; Actual: 1]

also localizationConsistencyTest is failing: expected: but was:
-> The localized string needs to be exactly the same as the string before the equal sign (including capital letters), except the escape characters

[mlep]

markdown-lint is complaining: CHANGELOG.md:50:154 MD009/no-trailing-spaces Trailing spaces [Expected: 0 or 2; Actual: 1]

also localizationConsistencyTest is failing: expected: but was:
-> The localized string needs to be exactly the same as the string before the equal sign (including capital letters), except the escape characters

@calixtus Thanks for pointing me to these 2 types of failing checks. I could solve the one about localization, but I am not able to find a trailing space in my changes to in changelog.md ...
Please, could you get a look and step in?

[tobiasdiez]

I think (and hope) that's a false positive. The error message also doesn't make any sense as there are not 154 characters on line 50. So I'll merge now, in the hope the test passes in master.