Hi there, just checked again and that's a typo, so we'll get that fixed in the next update! Thanks for flagging this. It should be:
Strong, roll 3d6+2 for Strength. Been down in the dark for too long, roll 3d6 + 1 for Agility and Presence. The idea was that Agility and Presence have been honed somewhat over time in the depths of a mine.