chore: Update badge in README

Author: pdubroy

README.md

@@ -1,4 +1,4 @@
-# [Ohm](https://ohmjs.org/) · [![NPM](https://img.shields.io/npm/v/ohm-js.svg)](https://www.npmjs.com/package/ohm-js) ![Node.js CI](https://github.com/ohmjs/ohm/workflows/Node.js%20CI/badge.svg?style=flat-square) [![Chat on Discord](https://img.shields.io/badge/chat-on%20discord-7289da.svg?sanitize=true)](https://discord.gg/KwxY5gegRQ)
+# [Ohm](https://ohmjs.org/) · [![NPM](https://img.shields.io/npm/v/ohm-js.svg)](https://www.npmjs.com/package/ohm-js) [![Node.js CI](https://github.com/ohmjs/ohm/actions/workflows/node.js.yml/badge.svg)](https://github.com/ohmjs/ohm/actions/workflows/node.js.yml) [![Chat on Discord](https://img.shields.io/badge/chat-on%20discord-7289da.svg?sanitize=true)](https://discord.gg/KwxY5gegRQ)
 
 Ohm is a parsing toolkit consisting of a library and a domain-specific language. You can use it to parse custom file formats or quickly build parsers, interpreters, and compilers for programming languages.