man: Fix markup
- Remove unnecessary macro argument quoting.
- Variables, pathnames in italics.
- Keywords in bold.
- Man page references in bold, followed by the man page number.
- Fix TP/TQ macro usage.
Signed-off-by: Guillem Jover <guillem@hadrons.org>
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>