chore(readme): update a documentation link (#576)

Author: omahs

README.md

@@ -3,7 +3,7 @@
 [![CI](https://github.com/taikoxyz/taiko-client/actions/workflows/test.yml/badge.svg)](https://github.com/taikoxyz/taiko-client/actions/workflows/test.yml)
 [![Codecov](https://img.shields.io/codecov/c/github/taikoxyz/taiko-client?logo=codecov&token=OH6BJMVP6O)](https://codecov.io/gh/taikoxyz/taiko-client)
 
-Taiko protocol's client software implementation in Go. Learn more about Taiko nodes with [the docs](https://taiko.xyz/docs/concepts/taiko-nodes).
+Taiko protocol's client software implementation in Go. Learn more about Taiko nodes with [the docs](https://docs.taiko.xyz/core-concepts/taiko-nodes/).
 
 ## Project structure