Merge branch 'axil-styleguide-inline-links' into 'master'

Add section about inline links

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/181408



Merged-by: Suzanne Selhorn <sselhorn@gitlab.com>
Approved-by: Timo Furrer <tfurrer@gitlab.com>
Approved-by: Suzanne Selhorn <sselhorn@gitlab.com>
Co-authored-by: Achilleas Pipinellis <axil@gitlab.com>