Trivialfix -- Fix spacing in docstring
Trivialfix -- Fix spacing in docstring

Found a poorly formatted docstring while going
through code.  Fixing it here.

Change-Id: I6a2fbb7bd4b37b081296c71f714a23d4901a9d2a

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