Merge branch '424199-dora-docs-improvements' into 'master'

Improve DORA docs

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/136606



Merged-by: Marcin Sedlak-Jakubowski <msedlakjakubowski@gitlab.com>
Approved-by: Marcin Sedlak-Jakubowski <msedlakjakubowski@gitlab.com>
Co-authored-by: Lorena Ciutacu <lciutacu@gitlab.com>