Why not list the augments just like loot if they can only be found in one quest? Why have to go to another wiki page and scroll through to find it only drops in one place?
I'm afraid to say this is a problem with the way we set up our loot lists currently - augments have a separate template to named items which makes it difficult to integrate them into the template we use to automatically list items. I believe we have an editor working on this, but either progress has stalled or it's taking a lot longer than expected.
Trust me, we'd like to, but we didn't think things through when the first named augments were added a few years ago and now fixing things is going to be really awkward.