docs: bring the rtcwake man page closer to standard formatting

Also sort the options alphabetically, and use the standard comma
instead of the vertical bar to separate short from long option.

Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
docs: sort the options in the man pages of hwclock and uuidd

Also improve the formatting a bit.

Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
docs: remove all mention of helper= and uhelper= from umount man page

Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
docs: improve the formatting of the chfn and chsh man pages

Also fix a pasting mistake where the chfn man page suggested
to use ypchsh or lchsh for non-local entries.

Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
docs: give the man page of utmpdump the proper User Commands header

Also bring the formatting closer to standard.

Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
docs: bring the runuser and su man pages closer to standard formatting

Signed-off-by: Benno Schulenberg <bensberg@justemail.net>