wiki: Update RELEASING.md Deprecated Manual Release steps (mongodb#2015)

Author: matt-condon

RELEASING.md

@@ -14,9 +14,11 @@ Stable releases are now managed by internal tooling (PCT)
 
 Use the instructions bellow as a fallback.
 
-**Deprecated**
+### Deprecated
+_**Note:** This action will only publish a release for [maintainers of the cli](https://github.com/orgs/mongodb/teams/mongocli)_
+
+To manually generate a new stable release you can run:
 
-To generate a new stable release you can run:
 
 ```bash
 ./scripts/release.sh atlascli/v1.0.0