fix: use correct discord link in readme (#11)

* Update README.md

* Update README.md

Author: zoey-kaiser

README.md

@@ -17,7 +17,7 @@
 [![GitHub stars](https://badgen.net/github/stars/sidebase/sidebase)](https://GitHub.com/sidebase/sidebase/)
 [![License][license-src]][license-href]
 [![Follow us on Twitter](https://badgen.net/badge/icon/twitter?icon=twitter&label)](https://twitter.com/sidebase_io)
-[![Join our Discord](https://badgen.net/badge/icon/discord?icon=discord&label)](https://discord.gg/9MUHR8WT9B)
+[![Join our Discord](https://badgen.net/badge/icon/discord?icon=discord&label)](https://discord.gg/NDDgQkcv3s)
 
 ## create-sidebase