It’s a nothingburger. Not only did she make that statement today when answering Stefanik, but also revealed the “Biden-Burisma briefing” in her previous closed door deposition. If needed, she will be afforded the opportunity to correct her statement, as has long been SOP for such instances. I doubt they will even bother, as it is a meaningless “gotcha” at this point.
“Revise and Extend my remarks” does not apply to formal congressional inquiries.