fix(docs): add trailingSlash for GitHub Pages compatibility

GitHub Pages redirects non-trailing-slash URLs with 301, causing
Algolia crawler to ignore all sitemap entries. Setting trailingSlash
to true aligns generated URLs with what GitHub Pages actually serves.

apps/docs/docusaurus.config.ts

@@ -8,6 +8,7 @@ const config: Config = {
   tagline: "A simple yet powerful dashboard for your server.",
   url: "https://homarr.dev",
   baseUrl: "/",
+  trailingSlash: true,
   favicon: "img/logo.png",
   organizationName: "homarr-labs",
   projectName: "homarr",