Use GHE url in book.json
Use GHE url in book.json

seejee/enzyme,seejee/enzyme,airbnb/enzyme,dustinsanders/enzyme,hartzis/enzyme,toddw/enzyme,hartzis/enzyme,dustinsanders/enzyme,airbnb/enzyme,toddw/enzyme,CurtisHumphrey/enzyme,CurtisHumphrey/enzyme