Merge branch 'docs-cmutua-disable-feed-tokens' into 'master'

Add steps for disabling feed tokens via the UI

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/143658



Merged-by: Jon Glassman <jglassman@gitlab.com>
Approved-by: Jon Glassman <jglassman@gitlab.com>
Co-authored-by: Christopher Mutua <cmutua@gitlab.com>