add a release comment to contrib guide

CONTRIBUTING.md

@@ -56,3 +56,7 @@ Run this script to package into a `.deb` file, which can be installed on Ubuntu.
 ```
 /bin/bash build-extension.sh
 ```
+
+# Releases
+
+PGMQ Postgres Extension releases are automated through a [Github workflow](https://github.com/tembo-io/pgmq/blob/main/.github/workflows/extension_ci.yml). The compiled binaries are publish to and hosted at [pgt.dev](https://pgt.dev). To create a release, create a new tag follow a valid [semver](https://semver.org/), then create a release with the same name. Auto-generate the release notes and/or add more relevant details as needed. See subdirectories for the [Rust](https://github.com/tembo-io/pgmq/tree/main/core) and [Python](https://github.com/tembo-io/pgmq/tree/main/tembo-pgmq-python) SDK release processes.