backticks don't work inside of the link text

[elf Pavlik]

Given

[`Content-Security-Policy: sandbox`](https://www.w3.org/TR/CSP3/#directive-sandbox)

I would expect

Content-Security-Policy: sandbox

<a href="https://www.w3.org/TR/CSP3/#directive-sandbox"><code>Content-Security-Policy: sandbox</code></a>

But I get

[Content-Security-Policy: sandbox](https://www.w3.org/TR/CSP3/#directive-sandbox)

[<code>Content-Security-Policy: sandbox</code>](https://www.w3.org/TR/CSP3/#directive-sandbox)

[Tab Atkins Jr.]

Yup, known issue with the current parser design, will be fixed when I merge the inline-parsing branch