Merge branch 'duo-cs-adv-context' into 'master'

Advanced Context documentation improvement

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/175252



Merged-by: Marcin Sedlak-Jakubowski <msedlakjakubowski@gitlab.com>
Approved-by: Jordan Janes <jjanes@gitlab.com>
Approved-by: Marcin Sedlak-Jakubowski <msedlakjakubowski@gitlab.com>
Co-authored-by: Jonathan Glassman <jglassman@gitlab.com>