change printf to echo

This resolves issues with the printf syntax which doesn't play well with the  % symbol

base-fullbuild/root/etc/s6-overlay/s6-rc.d/svc-cron/run

@@ -57,7 +57,7 @@ fi
 crontab=$(crontab -l)
 
 # Output cron settings to console
-printf "Cron job set as: \n$crontab\n"
+echo -e "Cron job set as: \n$crontab\n"
 
 # Start Cron
 exec /usr/sbin/crond -f -L /dev/stdout