Misc mdoc(7) fixes: - Bump document date for recent updates. - Use .Fx for FreeBSD. - Remove EOL whitespace. - Start new sentences on new lines.
Misc mdoc(7) fixes:
- Bump document date for recent updates.
- Use .Fx for FreeBSD.
- Remove EOL whitespace.
- Start new sentences on new lines.

Reviewed by:	cperciva

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase