doc: wrap manpage AsciiDoc at 80 chars
doc: wrap manpage AsciiDoc at 80 chars

Doesn't change the format of the generated manpage.

Signed-off-by: David Disseldorp <589a549dc9f982d9f46aeeb82a09ab6d87ccf1d8@suse.de>

ddiss/elasto,ddiss/elasto