ref: 347f2de67d8c46428ba2366a041d68bea108244e
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>