update CI banner in readme

Author: Techatrix

README.md

@@ -1,6 +1,6 @@
 <img src="https://raw.githubusercontent.com/zigtools/zls/master/.github/assets/zls-opt.svg" alt="ZLS Logo" width=200>
 
-[![CI](https://github.com/zigtools/zls/workflows/CI/badge.svg)](https://github.com/zigtools/zls/actions)
+[![CI](https://github.com/zigtools/zls/actions/workflows/main.yml/badge.svg)](https://github.com/zigtools/zls/actions/workflows/main.yml)
 [![codecov](https://codecov.io/github/zigtools/zls/graph/badge.svg?token=WE18MPF00W)](https://codecov.io/github/zigtools/zls)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)