message: workflow(publish.yml): clarify tags input comment
diff: @@ -7,7 +7,7 @@ on:
  description: 'version: x.y.z (without "v")'
  required: true
  tag:
  - description: 'tag'
  + description: 'tag: empty for release; "beta" or "alpha" for pre-release'
  jobs:
  publish:
  