alpha1 version is deprecated and this commit correct the
example doc and make it GAd version
Additional note: we have already moved the artifacts to v1 version.
Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
RBD Snapshot doc was the part of the README.md file. Hence,
renamed the cephfs-snap-clone.md file to snap-clone.md file
and moved the rbd snapshot document there.
Signed-off-by: yati1998 <ypadia@redhat.com>