Update README.md

Author: SpliiT

README.md

@@ -13,7 +13,7 @@
   <img src="https://img.shields.io/badge/C%2B%2B-11-blue.svg" alt="Language">
   <img src="https://img.shields.io/badge/license-MIT-blue.svg" alt="License">
   <img src="https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg" alt="Semantic-release">
-  <a href="https://opengeode-slack-invite.herokuapp.com">
+  <a href="https://geode-solutions.com/#slack">
     <img src="https://opengeode-slack-invite.herokuapp.com/badge.svg" alt="Slack invite">
   </a>
   <a href="https://doi.org/10.5281/zenodo.6592422">