docs: fix a repo param on codespaces url

Author: JamBalaya56562

README.md

@@ -1,5 +1,5 @@
 # GitHub Docs <!-- omit in toc -->
-[![Build GitHub Docs On Codespaces](https://github.com/codespaces/badge.svg)](https://github.com/codespaces/new/?repo=github)
+[![Build GitHub Docs On Codespaces](https://github.com/codespaces/badge.svg)](https://github.com/codespaces/new/?repo=github/docs)
 
 This repository contains the documentation website code and Markdown source files for [docs.github.com](https://docs.github.com).