install-doc-quick - use git --exec-path to find git-sh-setup

This is needed as git-sh-setup is no longer in the path.

Signed-off-by: Mark Levedahl <mlevedahl@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/install-doc-quick.sh

@@ -6,7 +6,7 @@ head="$1"
 mandir="$2"
 SUBDIRECTORY_OK=t
 USAGE='<refname> <target directory>'
-. git-sh-setup
+. "$(git --exec-path)"/git-sh-setup
 cd_to_toplevel
 
 test -z "$mandir" && usage