Oh dear. This is unfortunate.
It appears that Brady Games may have done goofed the official Batman:Arkham Knight guide that launched alongside the game.
As a picture that GameSpot took at a local retailer shows, somebody missed a pretty key spelling error during printing.
As some one who is susceptible to a spelling mistake here and there, I feel this editor's pain. I'm not sure if this is true of every guide that was printed, but if it is….eesh. No bueno.