The Adept edge has been updated via the errata. The more printing of the Savage Worlds Deluxe Explorer's edition has it corrected, as do both versions of the Deluxe in pdf. The errata is as follows:
The Adept Edge in the data file still gives +1d4 Martial Arts damage. This was an easy fix, but is good to point out to others (and maybe get it fixed officially at some point in the future).
Page 38 Adept: Change to “Requirements: Novice, Arcane Background (Miracles), Martial Artist, Faith d8+, Fighting d8+”
and change the second paragraph to “As a free action, an adept can spend 1 Power Point to gain AP 2 with all of his unarmed attacks until his next action.”
The Adept Edge in the data file still gives +1d4 Martial Arts damage. This was an easy fix, but is good to point out to others (and maybe get it fixed officially at some point in the future).