update discord invite

README.md

 <p align="center"><img src="https://raw.githubusercontent.com/cstate/cstate/master/images/highlight.svg?sanitize=true" alt="cState example illustration"></p>
 
-<p align="center"><a href="https://github.com/cstate/cstate/releases"><img src="https://img.shields.io/github/release/cstate/cstate/all.svg?style=flat-square" alt="GitHub release" /></a> <a href="https://github.com/cstate/cstate/commits/master"><img src="https://img.shields.io/github/last-commit/cstate/cstate.svg?style=flat-square" alt="GitHub last commit" /></a> <a href="https://github.com/cstate/cstate/tree/master/"><img src="https://img.shields.io/github/repo-size/cstate/cstate.svg?style=flat-square" alt="GitHub repo size in bytes" /></a> <a href="https://discord.gg/EvQZdhT"><img src="https://img.shields.io/badge/discord-support-7289DA.svg?logo=discord&style=flat-square" alt="Discord Chat" /></a> <a href="https://twitter.com/cstate"><img src="https://img.shields.io/twitter/follow/mistermantas.svg?style=social&amp;label=Follow" alt="Twitter" /></a> <a href="https://github.com/ivbeg/awesome-status-pages"><img src="https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg" alt="Awesome status page" /></a></p>
+<p align="center"><a href="https://github.com/cstate/cstate/releases"><img src="https://img.shields.io/github/release/cstate/cstate/all.svg?style=flat-square" alt="GitHub release" /></a> <a href="https://github.com/cstate/cstate/commits/master"><img src="https://img.shields.io/github/last-commit/cstate/cstate.svg?style=flat-square" alt="GitHub last commit" /></a> <a href="https://github.com/cstate/cstate/tree/master/"><img src="https://img.shields.io/github/repo-size/cstate/cstate.svg?style=flat-square" alt="GitHub repo size in bytes" /></a> <a href="https://discord.gg/zYCjzys"><img src="https://img.shields.io/badge/discord-support-7289DA.svg?logo=discord&style=flat-square" alt="Discord Chat" /></a> <a href="https://twitter.com/cstate"><img src="https://img.shields.io/twitter/follow/mistermantas.svg?style=social&amp;label=Follow" alt="Twitter" /></a> <a href="https://github.com/ivbeg/awesome-status-pages"><img src="https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg" alt="Awesome status page" /></a></p>
 
 > Über fast, backwards compatible (IE8+), tiny, and simple status page built with Hugo. Completely _free_ with Netlify & GitHub Pages.