Add Vratix to README.md

Author: ivan-ivanovv

packages/contentlayer/README.md

@@ -184,5 +184,6 @@ Join [our Discord community](https://discord.gg/fk83HNECYJ) to get help, suggest
 - [Modern Developer Blog Template (Digital Garden Starter)](https://github.com/thedevdavid/digital-garden/)([Source](https://github.com/thedevdavid/digital-garden/))
 - [floriankiem.com](floriandwt.com) ([Source](https://github.com/floriandwt/florians-website/))
 - [zippystarter](https://zippystarter.com)
+- [Vratix](https://vratix.com) ([Source](https://github.com/vratix-dev/api-library))
 
 Are you using Contentlayer? Please add your page (and repo) to the end of the list via a PR. 🙏