Merge pull request #8346 from juliantaylor/mkimage-debootstrap

fix help message for mkimage debootstrap with components

contrib/mkimage.sh

@@ -6,7 +6,7 @@ mkimg="$(basename "$0")"
 usage() {
 	echo >&2 "usage: $mkimg [-d dir] [-t tag] script [script-args]"
 	echo >&2 "   ie: $mkimg -t someuser/debian debootstrap --variant=minbase jessie"
-	echo >&2 "       $mkimg -t someuser/ubuntu debootstrap --include=ubuntu-minimal --components main,universe trusty"
+	echo >&2 "       $mkimg -t someuser/ubuntu debootstrap --include=ubuntu-minimal --components=main,universe trusty"
 	echo >&2 "       $mkimg -t someuser/busybox busybox-static"
 	echo >&2 "       $mkimg -t someuser/centos:5 rinse --distribution centos-5"
 	echo >&2 "       $mkimg -t someuser/mageia:4 mageia-urpmi --version=4"