The rest of the Wikipedia page discusses errata as the documents issued to describe the errors, not the errors themselves. The section you’ve linked is… a bit

The rest of the Wikipedia page discusses errata as the documents issued to describe the errors, not the errors themselves. The section you’ve linked is… a bit weirdly written. I don’t think they meant to suggest an alternative definition there. For example the first sentence could reasonably be read as saying the bugs are being “described as errata” but I think the more likely reading (and the one that is compatible with the rest of the article) is that they were trying to say that the process of documenting and describing the bug is what’s being done “as errata.”