Tomb of Annihilation Bug / wrong link

I was taking my party through ToA, Obolaka's Shrine. An NPC Voj has Greater Invisibility, which is a 4th level spell... his spell book (parcel) lists a 4th level spell as Invisibility (which is a link to the 2nd level spell) rather than Greater Invisibility.

Please fix. Image below

https://i.imgur.com/B1fUXIg.png

Please report issues with 5E products in 5E bug report thread at the top of the 5E sub forum. Thanks.

Noted.