Include note in release docs

Author: tcompa

docs/development/release.md

@@ -9,3 +9,8 @@ Steps to release a new `fractal-web` version:
 * Execute `git push origin main`
 * Execute `git push origin <new-version-tag>`
 * Update the GitHub release page with the information from `CHANGELOG.md`
+
+> NOTE: Pushing a new version tag (like v5.6.7) triggers [a dedicated GitHub
+> action](https://github.com/fractal-analytics-platform/fractal-web/blob/main/.github/workflows/github_release.yaml),
+> which also creates build artifacts (based on `npm pack`) and attaches them to
+> the GitHub release.