add TODO

src/server/routes/apiv3/customize-setting.js

@@ -25,6 +25,7 @@ module.exports = (crowi) => {
 
   const { ApiV3FormValidator } = crowi.middlewares;
 
+  // TODO GW-533 implement accurate validation
   const validator = {
     layoutTheme: [
       body('layoutType').isString(),