fix: integratie user + errors gefixt zodat het runt + format

backend/src/routes/groups.ts

@@ -1,18 +1,19 @@
-import express from 'express'
+import express from 'express';
 import { getAllGroupsHandler, getGroupHandler } from '../controllers/groups.js';
+
 const router = express.Router({ mergeParams: true });
 
-// root endpoint used to search objects
+// Root endpoint used to search objects
 router.get('/', getAllGroupsHandler);
 
-// information about a group (members, ... [TODO DOC])
+// Information about a group (members, ... [TODO DOC])
 router.get('/:groupid', getGroupHandler);
 
-// the list of questions a group has made
+// The list of questions a group has made
 router.get('/:id/question', (req, res) => {
     res.json({
-        questions: [ '0' ],
+        questions: ['0'],
     });
-})
+});
 
-export default router
+export default router;