style: fix linting issues met Prettier

backend/config.js

@@ -5,4 +5,3 @@
 export const DWENGO_API_BASE = 'https://dwengo.org/backend/api';
 export const FALLBACK_LANG = 'nl';
 export const FALLBACK_SEQ_NUM = 1;
-

backend/src/controllers/students.ts

@@ -143,4 +143,4 @@ export async function getStudentSubmissionsHandler(req: Request, res: Response):
     res.json({
         submissions: submissions,
     });
-}
+}