<!-- Describe the changes you have made here: what, why, ... Link the issue that will be closed, e.g., "Closes #333". If your PR closes a koppor issue, link it using its URL, e.g., "Closes https://github.com/koppor/jabref/issues/47". "Closes" is a keyword GitHub uses to link PRs with issues; do not change it. Don't reference an issue in the PR title because GitHub does not support auto-linking there. --> ### Mandatory checks <!-- - Go through the list below. Please don't remove any items. - [x] done; [ ] not done / not applicable --> - [ ] Change in `CHANGELOG.md` described in a way that is understandable for the average user (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 developer's documentation](https://devdocs.jabref.org/): Is the information available and up to date? If not, I outlined it in this pull request. - [ ] [Checked documentation](https://docs.jabref.org/): Is the information available and up to date? If not, I created an issue at <https://github.com/JabRef/user-documentation/issues> or, even better, I submitted a pull request to the documentation repository.