Clean up docs redirects, ee - 2024-02-19

Monthly cleanup of docs redirects.

See https://about.gitlab.com/handbook/product/ux/technical-writing/#regularly-scheduled-tasks

_Created automatically: https://gitlab.com/gitlab-org/gitlab-docs/-/blob/main/doc/raketasks.md#clean-up-redirects_

Related to technical-writing#985 (closed)