use QuotaSet consistently; fix unit test
diff --git a/openstack/compute/v2/extensions/quotasets/doc.go b/openstack/compute/v2/extensions/quotasets/doc.go
index 893c105..721024e 100644
--- a/openstack/compute/v2/extensions/quotasets/doc.go
+++ b/openstack/compute/v2/extensions/quotasets/doc.go
@@ -1,3 +1,3 @@
-// Package quotasets provides information and interaction with Quotaset
+// Package quotasets provides information and interaction with QuotaSet
// extension for the OpenStack Compute service.
package quotasets