Broken Link "/ee/user/project/merge_requests/performance_diff.html"
There is currently a link here on this page at the end of the "Silver Plan" feature list: https://about.gitlab.com/gitlab-com/
It links to: https://docs.gitlab.com/ee/user/project/merge_requests/performance_diff.html
Yet https://docs.gitlab.com/ee/user/project/merge_requests/performance_diff.html does not exist.