Webgrab update permissions and missing wg3-cron

SO the cron issue appears to have been an oversight in readme updates during a recent change to how we handle cron. @NyNe submitted Refer to universal cron mod by nemchik · Pull Request #68 · linuxserver/docker-webgrabplus (github.com) which i’ve just approved and should resolve any confusion.

If you need any help with this, I would encourage you to come on discord for that support!

thanks!