Update Documentation example link to 3.0
Update Documentation example link to 3.0

Update the Documentation link from 2.2 -> 3.0

Helpful for newbies.
fgal/ceph-ansible,travmi/ceph-ansible,fgal/ceph-ansible,ceph/ceph-ansible,font/ceph-ansible,travmi/ceph-ansible,ceph/ceph-ansible,font/ceph-ansible