You did nothing wrong. You very reasonably pointed out that your husband was being deliberately hurtful / goady / mean.
What he said wasn't funny, whichever way you dress it.
He is belittling your contribution. If someone planned a holiday for me, I'd be really grateful and make sure to tell them so. He's doing the opposite, like he thinks you're a figure of fun, to belittle. He wants you to know he isn't grateful for what you've done, and in fact thinks he could have done a better job of it.
In a 'normal' situation, he would have apologised before now, made sure you know he's grateful for all your planning and really looking forward to the holiday. He certainly wouldn't be sulking. Sulking doesn't happen in healthy relationships. Even worse, he's sulking on the back of something HE did wrong.
Don't apologise again. That just reinforces to him that he was in the right. Don't try to get him to talk. Just go about your day, happily. Do what you would have done anyway. Maybe take the children out to the park or for ice cream. All have a lovely day. If he wants to stay on his own sulking then so what.
If he's a sulker, if he gices the silent treatment, if he undermines what you do, talks down to you, belittles you, tries to make you feel bad - consider that he is abusive.