Fix release notes + version in docs

Fix the autogeneration of release notes.

Also fix version number.

Type of change

• Documentation update

Checklist

• I have read the guidelines for contributing.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have installed and run pre-commit on the files I edited or added.