The tagged template literal function which wraps the text in an object that is displayed as Markdown-formatter string.
The Markdown syntax is based on GitHub Flavored Markdown,
and supports math formatting with KaTeX
(wrap inline math expressions in $ and block math expressions in $$, escape \ as \\).
markdown(string)
string
A string.
An instance of Markdown object that will be displayed as Markdown-formatted text.
markdown`See **Calcish** [website](https://calcish.com).`
markdown`
# Hello, world!
~~~js
Math.sin(2)
~~~
This *is* a **test**.
`