Merge branch 'docs-faleksic-respond-group-updates' into 'master'

Remove outdated references from Respond docs

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/148506



Merged-by: Marcin Sedlak-Jakubowski <msedlakjakubowski@gitlab.com>
Approved-by: Marcin Sedlak-Jakubowski <msedlakjakubowski@gitlab.com>
Reviewed-by: Achilleas Pipinellis <axil@gitlab.com>
Co-authored-by: Achilleas Pipinellis <axil@gitlab.com>
Co-authored-by: Filip Aleksic <faleksic@gitlab.com>