fix typo in comment
diff --git a/openstack/networking/v2/ports/requests.go b/openstack/networking/v2/ports/requests.go
index 69d2a79..2caf1ca 100644
--- a/openstack/networking/v2/ports/requests.go
+++ b/openstack/networking/v2/ports/requests.go
@@ -226,7 +226,7 @@
 	return res
 }
 
-// IDFromName is a convienience function that returns a port's ID given its name.
+// IDFromName is a convenience function that returns a port's ID given its name.
 func IDFromName(client *gophercloud.ServiceClient, name string) (string, error) {
 	portCount := 0
 	portID := ""