Fix syntax for dynamic docs versioning (#4708)

docs/.prettierrc.js

@@ -1,9 +1,6 @@
-import { readFile } from 'node:fs/promises';
+const config = require('../.prettierrc.json');
 
-// eslint-disable-next-line antfu/no-top-level-await
-const config = JSON.parse(await readFile(new URL('../.prettierrc.json', import.meta.url)));
-
-export default {
+module.exports = {
   ...config,
   plugins: ['@ianvs/prettier-plugin-sort-imports'],
   importOrder: [