(#4) Docs: update the maintainer workflow

Author: ForNeVeR

MAINTAINERSHIP.md

@@ -6,5 +6,6 @@ Prepare a New Release
 To prepare a new release, perform the following actions:
 1. Update the `CHANGELOG.md` entry.
 2. Merge all the changes into the `main` branch via a pull request.
+3. Push a tag in form of `v<VERSION>`, e.g. `v0.0.1`.
 
 All the changes are automatically published to https://andivionian.fornever.me by the CD pipeline, so no further actions are required.