thank you, I wish there was a way to edit stuff like this, mistakes happen

Thank you ;)

If the giveaway is very recent, few entries, requesting a deletion for "accident" or similar causes grants an automatic deletion, instantly. I don't know the exact margins for it to be granted, but it saved several badly made giveaways for me so I could redo them properly.
Also note that the deleted giveaway, invisible to everyone, will still appear in your active giveaways list until its time expires, taking up one giveaway slot if you're short of them.
I hope the info is useful to you.