[website] Show chronik options in the online man page

Summary: Build with chronik to generate the man pages.

Test Plan:
Optional: bump min version to 0.29.0 to avoid building all the 0.28.0 versions if they are not cached.

./scripts/fetch_documentation.sh
bundle exec jekyll serve

Check the 0.29.0 man page contains the chronik options.

Reviewers: #bitcoin_abc, bytesofman

Reviewed By: #bitcoin_abc, bytesofman

Differential Revision: https://reviews.bitcoinabc.org/D15891