The laser etchings are orientation marks that tell you which face goes which way and how to rotate them in their pocket to minimize the runout. NSK's will be documented on their web site. At the very least, go check out how to line up the marks.
I suspect you will be able to tell from the site whether you need a spacer, but I'll bet not.
Also, those are inspection sheets. The diagram is telling you pretty clearly how it wants to sit for proper preload. Note the offsets in microns. Take the bearing code, 7008ATYP5, and go look it up on the NSK site.