Affects Foreman 3.16+

Red Hat documentation team plans to migrate to a different markup and toolchain and that requires some changes in this upstream repository. For more information, see Foreman Community Discussion.

Acceptance criteria: Right now, we have text in version control. A successful GHA check, build, and deploy your changes to docs.theforeman.org for all flavours is a requirement for a PR to be merged. Changes related to the migration to DITA cannot break this workflow.