angular-docs-cn/aio/tools/transforms/templates/api/includes/description.html

{% if doc.description %}
<section class="description">
  <h2>Description</h2>
  {$ doc.description | trimBlankLines | marked $}
  {% if doc.usageNotes %}<p>Further information is available in the <a href="#usage-notes">Usage Notes...</a></p>{%
  endif %}
</section>
{% endif %}