Use semantic markup (modules d-g) (#6672)
* Use semantic markup.
* 'ignore:' is no longer needed.
* E() now works better.
(cherry picked from commit 2ed82e0318)
Co-authored-by: Felix Fontein <felix@fontein.de>
* dnf_versionlock: new module
* dnf_versionlock: fix style in doc
* dnf_versionlock: use check_rc in run_command
* dnf_versionlock: fix style and typos in doc