git add: Add --ignore-missing to SYNOPSIS
git add: Add --ignore-missing to SYNOPSIS

All the git add options were listed in the synopsis until the
--ignore-missing option was added. Change that so that the git add
documentation now has the complete listing.

Signed-off-by: Ævar Arnfjörð Bjarmason <0135fcc047f75af264c800977a73e353c6ba842d@gmail.com>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git