package ubuntu: Fix a typo

package/ubuntu/Makefile.am

@@ -28,7 +28,7 @@ upload-precise: source ensure-launchpad-configuration
 	  -e 's/ruby-dev (>= 1:1.9.3)/ruby1.9.1-dev (>= 1.9.1)/g' \
 	  -e '/ruby-gnome2-dev/d' \
 	  -e '/ruby-glib2/d' \
-	  -e 'dh-systemd/d' \
+	  -e '/dh-systemd/d' \
 	  precise/debian/control
 	sed -i \
 	  -e '/--enable-ruby-milter/i \\t\t--with-ruby=/usr/bin/ruby1.9.1 \\' \