Docs: Pipelines docs are in the wrong directory
Problem to solve
- Pipelines docs are under user/project instead of together with the rest of the CI docs.
- They don't have an index.md file, which breaks the docs site breadcrumbs, complicating navigation.
Move the whole dir into ci/pipelines/
Docs to be moved:
- index.md (create new from ce/ci/pipelines.html)
Who can address the issue
Docsteam: ~Verify cc/ @eread