TrivialFix: Fix typo in README file
TrivialFix: Fix typo in README file

Change-Id: Ib8a84f4176ef21ed47acb3c3f6a797d86dbd15f9

openstack/cloudkitty-dashboard,openstack/cloudkitty-dashboard,openstack/cloudkitty-dashboard,stackforge/cloudkitty-dashboard,stackforge/cloudkitty-dashboard,stackforge/cloudkitty-dashboard