docs(release): the tea command to mark a release as a prerelease takes a value

Refs #170

Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>
Signed-off-by: James Maes <james@kof22.com>

docs/RELEASING.md

@@ -328,7 +328,7 @@ that; Gitea does not, so it is a rule to keep, not one to rely on.) Instead:
    it, and mark it as a prerelease if stable users must stop receiving it. Do
    both **on git.kof22.com**, which is where installed apps from 1.1.1 on and the
    package managers look (edit the release there, or
-   `tea releases edit --repo KofTwentyTwo/gclo --prerelease v1.2.3`), and on
+   `tea releases edit --repo KofTwentyTwo/gclo --prerelease true v1.2.3`), and on
    GitHub for the versions up to 1.1.0 that still look there
    (`gh release edit v1.2.3 --notes-file ...`, `gh release edit v1.2.3 --prerelease`).
 2. Fix the cause on `main` through a normal pull request.