Add link to blog post in readme

Author: reinink

README.md

@@ -1,6 +1,6 @@
 <img src="https://raw.githubusercontent.com/tailwindlabs/prettier-plugin-tailwindcss/main/.github/banner.jpg" alt="prettier-plugin-tailwindcss" />
 
-A [Prettier](https://prettier.io/) plugin for Tailwind CSS v3.0+ that automatically sorts classes based on our recommended class order.
+A [Prettier](https://prettier.io/) plugin for Tailwind CSS v3.0+ that automatically sorts classes based on [our recommended class order](https://tailwindcss.com/blog/automatic-class-sorting-with-prettier#how-classes-are-sorted).
 
 ## Installation