chore(web): update redwoodjs tailwind config code example

Author: SutuSebastian

apps/web/content/docs/guides/redwood-js.mdx

@@ -57,7 +57,7 @@ yarn workspace web add flowbite-react
 
 ```js {5,9}
 /** @type {import('tailwindcss').Config} */
-export default {
+module.exports = {
   content: [
     // ...
     "../node_modules/flowbite-react/lib/esm/**/*.js",