Issue #3339557: Fix coding standards

modules/jsonrpc_core/src/Plugin/jsonrpc/Method/AddPermissionToRole.php

@@ -28,7 +28,7 @@ class AddPermissionToRole extends UserPermissionsBase {
    */
   public function execute(ParameterBag $params) {
     $permission = $params->get('permission');
-    /* @var \Drupal\user\RoleInterface $role */
+    /** @var \Drupal\user\RoleInterface $role */
     $role = $params->get('role');
     try {
       $role->grantPermission($permission);