Merge pull request #1626 from olliegilbey/readme-discord-update

chore: update discord link

README.md

@@ -198,8 +198,8 @@ and suggestions.
 
 - [GitHub issues](https://github.com/cosmos/cosmjs/issues) for bugs and feature
   requests
-- The #cosmjs channel on the
-  ["Cosmos Community" Discord server](https://discord.gg/cosmosnetwork) for
+- The `#dev-chat` channel, or `#dev-support-ai` on the
+  [interchain Discord server](https://discord.gg/interchain) for
   questions and open discussions
 - [#CosmJS on Twitter](https://twitter.com/search?q=%23CosmJS) to spread the
   word