archlinux: fix typo in install script

archlinux/PKGBUILD.install

@@ -231,7 +231,7 @@ pre_upgrade() {
 post_remove() {
   for srv in qubes-dvm qubes-sysinit qubes-misc-post qubes-netwatcher qubes-network qubes-qrexec-agent; do
     systemctl disable $srv.service
-  do
+  done
 }