Document the site path when talking about the site (base) URL
There is a hidden feature in the site URL that is not mentioned. If the site is deployed to a subfolder, then the subfolder should be included in the site (base) URL (e.g., https://example.org/docs
). The path of this subfolder (which may contain multiple path segments) is referred to as the site path. The site path should be explained as the path under which the Antora site is hosted.
Whenever Antora builds an absolute URL (such as in the sitemap or on the 404 page), it will prepend this path. For example, when making nginx or netlify redirect rules, the path matchers will start with the site path.
This information should be included here: https://docs.antora.org/antora/2.0/playbook/configure-site/#configure-url
That section title should also be renamed to "Configure site (base) URL" (or similar)