Fixes typo in doc-string
Fixes typo in doc-string

Change-Id: Ifd8c2fef34fbcae9baa8e6546ccee1d884f0b6d2

dims/glance,ozamiatin/glance,klmitch/glance,kfwang/Glance-OVA-OVF,saeki-masaki/glance,vuntz/glance,openstack/glance,openstack/glance,stevelle/glance,paramite/glance,vuntz/glance,sigmavirus24/glance,takeshineshiro/glance,JioCloud/glance,kfwang/Glance-OVA-OVF,wkoathp/glance,jumpstarter-io/glance,stevelle/glance,jumpstarter-io/glance,akash1808/glance,openstack/glance,scripnichenko/glance,takeshineshiro/glance,saeki-masaki/glance,paramite/glance,scripnichenko/glance,rajalokan/glance,akash1808/glance,sigmavirus24/glance,klmitch/glance,ozamiatin/glance,darren-wang/gl,darren-wang/gl,wkoathp/glance,rajalokan/glance,JioCloud/glance,dims/glance