I would read it again. They are referring to the two nails at one end that won't be covered with a shingle.
Here is the section you are referring to:

Attached Images

hip_and_ridge.pdf (39.8 KB, 22 views)

__________________
Eric Van De Ven Magnum Inspections Inc. (954) 340-6615
www.magnuminspections.com
I still get paid to be suspicious when I got nothing to be suspicious about!