Update headline hierarchy and add version note
What does this MR do?
- Moves "Transfer a project to a new namespace" project API section into correct hierarchy
- Add version note of this API addition introduced in 11.1
References
Mentioned in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/20122#note_93826730.
Edited by 🤖 GitLab Bot 🤖