Merge branch 'switchboard_config_ui_docs' into 'master'

Switchboard docs update - Config UI

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/135252



Merged-by: Lorena Ciutacu <lciutacu@gitlab.com>
Approved-by: Lekan Sogunle <lsogunle@gitlab.com>
Approved-by: Lysanne Pinto <lpinto@gitlab.com>
Approved-by: Lorena Ciutacu <lciutacu@gitlab.com>
Reviewed-by: Lorena Ciutacu <lciutacu@gitlab.com>
Reviewed-by: Lysanne Pinto <lpinto@gitlab.com>
Co-authored-by: ashiel <ashiel@gitlab.com>
Co-authored-by: Lysanne Pinto <lpinto@gitlab.com>