Merge branch 'rf-update-dedicated-instructions' into 'master'

Update Dedicated-specific instructions

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/156525



Merged-by: Russell Dickenson <rdickenson@gitlab.com>
Approved-by: Dheeraj Joshi <djoshi@gitlab.com>
Approved-by: Russell Dickenson <rdickenson@gitlab.com>
Reviewed-by: Dheeraj Joshi <djoshi@gitlab.com>
Co-authored-by: Dheeraj Joshi <djoshi@gitlab.com>
Co-authored-by: rossfuhrman <rfuhrman@gitlab.com>