Docs: Fix labels on navigation menu to reflect terminology changes

This commit builds on e12e2b8 and 1e737f9.

Docker-DCO-1.1-Signed-off-by: O.S. Tezer <ostezer@gmail.com> (github: ostezer)
Merge pull request #4 from ostezer/privreg

Docs: Fix labels on navigation menu to reflect terminology changes