doc: Fix some warnings from "test-groff" for manuals

doc: Fix some warnings from "test-groff" for manuals

Source is current git content.

Output is from: test-groff -b -e -mandoc -T utf8 -rF0 -t -w w -z

  [ "test-groff" is a developmental version of "groff" ]

Input file is ././disk-utils/sfdisk.8

troff: backtrace: file '<./disk-utils/sfdisk.8>':67
troff: <./disk-utils/sfdisk.8>:67: warning: trailing space

Input file is ././misc-utils/kill.1

troff: backtrace: '/home/bg/git/groff/build/s-tmac/an-ext.tmac':133: macro 'EE'
troff: backtrace: file '<./misc-utils/kill.1>':167
troff: <./misc-utils/kill.1>:167: warning: macro 'mF' not defined
troff: backtrace: '/home/bg/git/groff/build/s-tmac/an-ext.tmac':134: macro 'EE'
troff: backtrace: file '<./misc-utils/kill.1>':167
troff: <./misc-utils/kill.1>:167: warning: number register 'mE' not defined
troff: backtrace: '/home/bg/git/groff/build/s-tmac/an-ext.tmac':134: macro 'EE'
troff: backtrace: file '<./misc-utils/kill.1>':167
troff: <./misc-utils/kill.1>:167: warning: bad font number
troff: backtrace: '/home/bg/git/groff/build/s-tmac/an-ext.tmac':135: macro 'EE'
troff: backtrace: file '<./misc-utils/kill.1>':167
troff: <./misc-utils/kill.1>:167: warning: number register 'sP' not defined
troff: backtrace: '/home/bg/git/groff/build/s-tmac/an-ext.tmac':134: macro 'EE'
troff: backtrace: file '<./misc-utils/kill.1>':170
troff: <./misc-utils/kill.1>:170: warning: bad font number

Input file is ././sys-utils/ipcs.1

<./sys-utils/ipcs.1>:103 (macro BR): only 1 argument, but more are expected

Input file is ././sys-utils/mount.8

<./sys-utils/mount.8>:68 (macro RB): only 1 argument, but more are expected
troff: backtrace: '/home/bg/git/groff/build/s-tmac/an-old.tmac':467: macro 'RB'
troff: backtrace: file '<./sys-utils/mount.8>':68
troff: <./sys-utils/mount.8>:68: warning [p 1, 3.5i]: can't break line
an-old.tmac: <./sys-utils/mount.8>:201 (.RE): warning: extra .RE or .RS is missing before it; "an-RS-open" is 0.
<./sys-utils/mount.8>:453 (macro BR): only 1 argument, but more are expected
<./sys-utils/mount.8>:500 (macro BR): only 1 argument, but more are expected
<./sys-utils/mount.8>:1050 (macro BR): only 1 argument, but more are expected

Input file is ././sys-utils/setpriv.1

<./sys-utils/setpriv.1>:17 (macro BR): only 1 argument, but more are expected
<./sys-utils/setpriv.1>:154 (macro BR): only 1 argument, but more are expected
<./sys-utils/setpriv.1>:166 (macro BR): only 1 argument, but more are expected

Input file is ././sys-utils/umount.8

<./sys-utils/umount.8>:145 (macro IR): only 1 argument, but more are expected

Input file is ././sys-utils/unshare.1

<./sys-utils/unshare.1>:266 (macro BR): only 1 argument, but more are expected

[kzak@redhat.com: - add .RS to fix extra .RE in mount.8]

Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
Signed-off-by: Karel Zak <kzak@redhat.com>