Update docs/guides/go/realtime-messaging.mdx

Co-authored-by: Ryan Cartwright <[email protected]>

Author: davemooreuws

docs/guides/go/realtime-messaging.mdx

@@ -23,7 +23,7 @@ tags:
 
 - [Go](https://go.dev/dl/)
 - The [Nitric CLI](https://nitric.io/docs/installation)
-- An [AWS](https://aws.amazon.com), [GCP](https://cloud.google.com), or [Azure](https://azure.microsoft.com) account (_your choice_)
+- An [AWS](https://aws.amazon.com) account
 
 ## Getting started