help:dtext said:
"link title":https://github.com/r888888888/danbooru/
Links to an exact URL: link title.link title/artist_versions?search[artist_id]=62361
Links URL relative to Danbooru's servers: link title.
The DText URL formatting in its current form is rather inconvenient, as it tends to interpret symbols that come right after a hyperlink (e.g., parentheses and question marks) as the continuation of the latter. Hence I propose to change it (assuming that's possible) to the more usual
[url="URL"]TEXT[/url]
Or, at least, something like
"TEXT":"URL"