Point all pages at the new versioned docs site
User docs moved into the main repo (userdocs/, sidick/amiauth#88) and are
published at https://sidick.github.io/amiauth/ with a per-release version
picker. Each page here becomes a pointer to its successor; content history
stays in this wiki's page history and in the site's v1.0 version.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>