Update project name ceph-services in README
Update project name ceph-services in README

Change-Id: Id0d48743aeabf21021664573e5f74d30898708c2

open-power-ref-design-toolkit/os-services,open-power-ref-design-toolkit/os-services,open-power-ref-design-toolkit/os-services,open-power-ref-design/os-services,open-power-ref-design/os-services