ref: 14bce18a6c5aca8cb3e70a74d5045ca8b2358fee
dir: /docs/layouts/shortcodes/content-tree.html/
<div class="code">
<pre><code>
├── blog
│ ├── _index.md [section]
│ ├── first-post.md [page]
│ └── second-post
│ ├── index.md [page bundle]
│ └── photo.jpg [page resource]
└── tags
├── _index.md [taxonomy]
└── funny
└── _index.md [term]
</code></pre>
</div>