The initial statement was wrong. There's no preferred way of doing
things.
Blockquotes are meant to hold actual quotes, whereas the aside element
can be used to signify content that is slightly off-topic in regards to
the rest of the post.
The README has been updated to show a code example of both, including an
exemplary screenshot.
Since Hugo 0.55, we have to use `markdownify` in shortcodes that contain
HTML elements. At least we have to, if we want to render markdown code
inside the HTML element.
To use the `<aside>` element, we have to wrap our content in an
`<article>` tag.
This fixes#4.
Co-authored-by: Robert Lützner <robert.luetzner@iternity.com>