Remove some unnecessary spaces
Remove some unnecessary spaces

There is warning message when building docs, this patch
fix it.

TrivialFix

Change-Id: Ieb5543a66a618b7863a01b00d0eaf04e3b716eea

openstack/cinder,mahak/cinder,phenoxim/cinder,openstack/cinder,eharney/cinder,mahak/cinder,eharney/cinder,j-griffith/cinder,j-griffith/cinder,Datera/cinder,phenoxim/cinder,Datera/cinder