Fixes a failure to build the git-rev-parse manpage, seen with
asciidoc 8.0.0
We would love to use nicer quoting $$~$$ but alas asciidoc 7
does not know about it. So use asciidoc.conf and define {tilde}
to be ~.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de>