Fix a typo in the explanatory note
Fix a typo in the explanatory note

This patch changes 'assigend' to
'assigned' in the 531 line of
cinder/scheduler/filter_scheduler.py

Change-Id: I91206d988aa9243aaf2832922e8cd2aecd6b4501

mahak/cinder,mahak/cinder,openstack/cinder,openstack/cinder