/docs has a left navigation and eleven pages written for players first, then
hosters, then contributors: what Horizon is, install, settings, multiplayer,
logs and bug reports, hosting (the launcher's Servers page and the command
line), modpacks, mods and data packs, performance, contributing and the FAQ.
/server redirects to /docs/hosting. The build checks every link between the
pages and every image.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>