This is the first phase Ceph part of three phases to improve and rework
the Rook documentation for better user accessibility to the Rook
projects and  with that the storage providers.
Phase two is about automatic generation of CRD documentation and phase
three is about reworking the docs themselves and, e.g., examples for
CRDs and certain use cases.
Signed-off-by: Alexander Trost <galexrt@googlemail.com>