doc: Fixed hyperlink.

Fixes: #7558

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Fixed release notes syntax warnings.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
rados.py: Fixed docstring syntax warnings.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
Merge branch 'master' of https://github.com/ceph/ceph