emulators/virtualbox-ose{,-nox11}-legacy: fix PORTREVISION and option MANUAL => DOCS
- Fix PORTREVISION in master port emulators/virtualbox-ose-legacy for
slave port emulators/virtualbox-ose-nox11-legacy.
- Rename in slave port emulators/virtualbox-ose-nox11-legacy MANUAL to
DOCS - in master port was renamed in
https://cgit.freebsd.org/ports/commit?id=a0ef5898beb4c6a73e9d94aaa452c0eb37cbb14c.
- Bump emulators/virtualbox-ose-nox11-legacy.
Approved by: arrowd (mentor)
Differential Revision: https://reviews.freebsd.org/D41071
MFH: 2023Q3