chore: update csb link

Author: pi0

README.md

@@ -10,7 +10,7 @@
 
 > Module to scan and auto import components for Nuxt 2.13+
 
-- [🎲  Play on CodeSandbox](https://githubbox.com/nuxt/components/tree/master/example)
+- [🎲  Play on CodeSandbox](https://githubbox.com/nuxt/components/tree/main/example)
 - [🎬  Demonstration video (49s)](https://www.youtube.com/watch?v=lQ8OBrgVVr8)
 - [📖  Release Notes](./CHANGELOG.md)