added missing curly bracket

external-network/main.tf

@@ -38,7 +38,8 @@ output "external_network_id" {
 
 output "external_subnet_id" {
     value = openstack_networking_network_v2.external_net.id
+}
 
 output "router_id" {
     value = openstack_networking_router_v2.router.id
-}
+}
\ No newline at end of file