use QuotaSet consistently; fix unit test
diff --git a/openstack/compute/v2/extensions/quotasets/requests.go b/openstack/compute/v2/extensions/quotasets/requests.go
index ecb1ba1..52f0839 100644
--- a/openstack/compute/v2/extensions/quotasets/requests.go
+++ b/openstack/compute/v2/extensions/quotasets/requests.go
@@ -4,7 +4,7 @@
 	"github.com/rackspace/gophercloud"
 )
 
-// Get returns public data about a previously created Quotaset.
+// Get returns public data about a previously created QuotaSet.
 func Get(client *gophercloud.ServiceClient, tenantID string) GetResult {
 	var res GetResult
 	_, res.Err = client.Get(getURL(client, tenantID), &res.Body, nil)