chore: fix slack link

Author: rockstardev

README.md

@@ -115,4 +115,4 @@ This project is open source under the MIT license, which means you have full acc
 
 [issues]: https://github.com/LN-Zap/zap-desktop/issues
 [releases]: https://github.com/LN-Zap/zap-desktop/releases
-[slack]: https://join.slack.com/t/zaphq/shared_invite/enQtMzgyNDA2NDI2Nzg0LWQ1OGMyMWI3YTdmYTQ0YTVmODg4ZmNkYjQ1MzUxNGExMGRmZWEyNTUyOGQzMzZkYTdhODE3NmQxZWZiOGFkYWI
+[slack]: https://join.slack.com/t/zaphq/shared_invite/zt-roz0lalj-6fVdYQlLnpuM2c2QTvFgxA