fix kemono.party body text url parsing

[tokumeiii]

When an artist posted a link where the link text itself was the URL the link leads to, it would generate two URLs to follow, one of which had HTML garbage in it that made it unusable (i.e. you'd get both https://link.to/stuff and https://link.to/stuff</a></p>). This changes the parser to specifically select the URL parsed from the tag's href text so it will only generate one URL per link.

measure twice, cut once, accidentally uploaded the wrong png