id attributes missing from h1, h2, etc elements

[paulcuth]

I'm not sure if it's a requirement of translating Markdown to HTML, but it's certainly common to turn header values into slugs and add them as ids to an element that wraps the header in the HTML. This then enables direct linking to sections within the page.

For example:
https://github.com/sailorproject/sailor-md#usage-example-in-a-view-of-a-sailor-application