Fixed a handful of typos
diff --git a/openstack/compute/v2/servers/requests.go b/openstack/compute/v2/servers/requests.go
index 3465cbc..95a4188 100644
--- a/openstack/compute/v2/servers/requests.go
+++ b/openstack/compute/v2/servers/requests.go
@@ -225,7 +225,7 @@
 	return result
 }
 
-// UpdateOptsBuilder allows extentions to add additional attributes to the Update request.
+// UpdateOptsBuilder allows extensions to add additional attributes to the Update request.
 type UpdateOptsBuilder interface {
 	ToServerUpdateMap() map[string]interface{}
 }