message: fix navigation_rustdoc template
diff: <a href="/{{this.[0]}}/{{this.[1]}}"
  class="pure-menu-link">
  {{this.[0]}} {{this.[1]}}
  - <i class="dependencies this.[2]">{{this.[2]}}</i>
  + <i class="dependencies {{this.[2]}}">{{this.[2]}}</i>
  </a>
  </li>
  {{/each}}
  