Convert readme fragments to markdown

[sbidoul]

This PR was generated with the following commands:

$ oca-gen-addon-readme --convert-fragments-to-markdown --org-name OCA --repo-name rest-framework --branch 16.0 --addons-dir . --gen-html
$ pre-commit run -a
$ oca-gen-addon-readme --convert-fragments-to-markdown --org-name OCA --repo-name rest-framework --branch 16.0 --addons-dir . --gen-html

The double readme generation is because pre-commit modifies the markdown files produced by the rst to markdown conversion.

[github-actions]

There hasn't been any activity on this pull request in the past 4 months, so it has been marked as stale and it will be closed automatically if no further activity occurs in the next 30 days.
If you want this PR to never become stale, please ask a PSC member to apply the "no stale" label.

[francesco-ooops]

@sbidoul where did this stop?

[github-actions]

There hasn't been any activity on this pull request in the past 4 months, so it has been marked as stale and it will be closed automatically if no further activity occurs in the next 30 days.
If you want this PR to never become stale, please ask a PSC member to apply the "no stale" label.