Improve preflight message

setup/preflight.sh

@@ -55,7 +55,7 @@ fi
 ARCHITECTURE=$(uname -m)
 if [ "$ARCHITECTURE" != "x86_64" ]; then
 if [ -z "$ARM" ]; then
-	echo "Mail-in-a-Box only supports x86_64 and will not work on any architecture like ARM."
+	echo "Mail-in-a-Box only supports x86_64 and will not work on any other architecture, like ARM."
 	echo "Your architecture is $ARCHITECTURE"
 	exit
 fi