A link to a web page about bitcoin:text-assets

There's a line that reads as follows:

> Bitcoin does not natively support extra text data, but [hacks are possible][bitcoin:text-assets].

I think that was supposed to be a Markdown-style link at the end, but it seems it never got turned into one, i.e. with the second part being a URL inside parentheses. I tried to figure out an appropriate URL but didn't find anything suitable.