Typo: aufs2-utils -> aufs2-util

Signed-off-by: Aaron Griffin <aaronmgriffin@gmail.com>

README

@@ -17,7 +17,7 @@ First off, Archiso has some dependencies:
     - mkinitcpio
     - cdrkit
     - squashfs-tools
-    - aufs2-utils
+    - aufs2-util
     - mkarchroot from the devtools package
 Archiso itself can be installed with the handy dandy included Makefile,
 and the incantation 'make install'.

configs/install-iso/packages.list

 archlinux-installer
 aif
-aufs2-utils
+aufs2-util
 base
 ddrescue
 dmraid