Clarify availability of Group Wiki data after downgrade or trial
Release notes
Problem to solve
Group Wiki are available in GitLab Premium and Ultimate. Content created in a Group Wiki is not deleted when an account is downgraded or a trial has ended, but there is no way obvious to retrieve the data from the GitLab UI. The process to retrieve the data is to export the group data under Settings, which will include Group Wiki data. But there is no mention of that anywhere in the documentation or in the UI.
Leaving Group Wiki data in the app after a downgrade or expired trial is not desirable. It will result in confusion, frustration, and potentially erode the value of having Group Wikis as a Premium feature.
User experience goal
Anyone should be able to access their Group Wiki data created during a trial or after a downgrade.
Proposal
Document the process for exporting Group Wiki data in https://docs.gitlab.com/ee/user/project/wiki/#group-wikis