Fix release notes + version in docs

[jmduarte]

Fix the autogeneration of release notes.

Also fix version number.

Type of change

• [x] Documentation update

Checklist

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

[jmduarte]

OK, this fixes the autogenerated release notes, which we can check by downloading the build as an artifact: https://github.com/fastmachinelearning/hls4ml/suites/11957657003/artifacts/627077421

the versioning is still off, but that's a different problem...

[jmduarte]

OK it's all working now (including version number)! check the latest artifact!

https://github.com/fastmachinelearning/hls4ml/suites/11957927384/artifacts/627099082

resolution found via: https://github.com/actions/checkout/issues/1049