If you don’t want Target as a reference (which I personally don’t) then you could just tell your supervisor and leave. Personally, I have never done that, BUT, since all my immediate supervisors seem to be against me, I wouldn’t want a reference from them anyway, so it wouldn’t be like burning bridges or anything. I just need a new job lined up...
Otherwise, you can resign in the workday section of the website or just tell someone in charge. These days no one really cares anyway if someone quits.