hub-docs

39aa86eb - Add intro to index of Hub docs (#270)

Add intro to index of Hub docs (#270) * Add intro to index of Hub docs * Cleanup * Update docs/hub/index.md Co-authored-by: Pierric Cistac <Pierrci@users.noreply.github.com> Co-authored-by: Pierric Cistac <Pierrci@users.noreply.github.com>