Clean up docs redirects, ee - 2023-11-29

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_

Part of Docs project maintenance tasks, November 2023 (technical-writing#945 - closed).

Accompanying docs site MR: Clean up docs redirects - 2023-11-29 (gitlab-docs!4435 - merged).