message: Include slash at the end of sitemap URLs
  Without the slash, these URLs get immediately redirected to the version
  with the slash. We should skip the redirect.
diff: <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  {% for release in releases -%}
  <url>
  - <loc>https://docs.rs/{{ release.crate_name }}/latest/{{ release.target_name }}</loc>
  + <loc>https://docs.rs/{{ release.crate_name }}/latest/{{ release.target_name }}/</loc>
  <lastmod>{{ release.last_modified | escape_xml }}</lastmod>
  <priority>1.0</priority>
  </url>
  