Replace Twitter badge with Mastodon

Author: ehmicky

README.md

@@ -1,6 +1,6 @@
 [![Node](https://img.shields.io/badge/-Node.js-808080?logo=node.js&colorA=404040&logoColor=66cc33)](https://www.npmjs.com/package/@ehmicky/eslint-config)
 [![Browsers](https://img.shields.io/badge/-Browsers-808080?logo=firefox&colorA=404040)](https://www.npmjs.com/package/@ehmicky/eslint-config)
-[![Twitter](https://img.shields.io/badge/-Twitter-808080.svg?logo=twitter&colorA=404040)](https://twitter.com/intent/follow?screen_name=ehmicky)
+[![Mastodon](https://img.shields.io/badge/-Mastodon-808080.svg?logo=mastodon&colorA=404040&logoColor=9590F9)](https://fosstodon.org/@ehmicky)
 [![Medium](https://img.shields.io/badge/-Medium-808080.svg?logo=medium&colorA=404040)](https://medium.com/@ehmicky)
 
 [ESLint](https://eslint.org/) configuration for my own projects.