Documentation: quote commit messages consistently. Documentation quotes commit messages 14 times with double-quotes, and 7 times with single-quotes. The patch turns everything to double-quotes. A nice side effect is that documentation becomes more Windoze-friendly as AFAIK single quotes won't work there. Signed-off-by: Sergei Organov <osv@javad.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>