add prettier

packages/artplayer-template/next.js/README.md

@@ -22,8 +22,8 @@ The `pages/api` directory is mapped to `/api/*`. Files in this directory are tre
 
 To learn more about Next.js, take a look at the following resources:
 
-- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
-- [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
+-   [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
+-   [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
 
 You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js/) - your feedback and contributions are welcome!