change the citation of preprint version into journal version of article
Is there a major difference (a grave mistake or something) in the journal version? Apparently not.

Is there a grave mistake in your paper that you cite a preprint? I don't think so.

You also cite the version you were working with, which is Ok and a right thing to do.

I'd correct the reference in my database for the future use (and obtain the journal version, of course), but I won't bother with corrigenda. They are for bigger mistakes than just a wrong version of a reference.