Report a typo, and then reply to your own report. As a footnote to the typo-report, you would ask people to downvote the report so it became hidden, and upvote the daughter-post as a karma-balance.
e.g.
Larks
You spelt ### wrong.
NB: could everyone please downvote this post so it becomes hidden, and upvote the post below as a karma-balance.
Report a typo, and then reply to your own report. As a footnote to the typo-report, you would ask people to downvote the report so it became hidden, and upvote the daughter-post as a karma-balance.
e.g.
Larks