Update cron.md

Author: dereuromark

docs/sections/cron.md

@@ -1,6 +1,6 @@
 # Setting up the trigger cronjob
 
-As outlined in the [book](http://book.cakephp.org/3.0/en/console-and-shells/cron-jobs.html) you can easily set up a cronjob
+As outlined in the [book](https://book.cakephp.org/5/en/console-commands/cron-jobs.html#running-shells-as-cron-jobs) you can easily set up a cronjob
 to start a new worker.
 
 The following example uses "crontab":
@@ -9,12 +9,12 @@ The following example uses "crontab":
 
 Make sure you use `crontab -e -u www-data` to set it up as `www-data` user, and not as root etc.
 
-This would start a new worker every 10 minutes. If you configure your max life time of a worker to 15 minutes, you
+This would start a new worker every 10 minutes. If you configure your max lifetime of a worker to 15 minutes, you
 got a small overlap where two workers would run simultaneously. If you lower the 10 minutes and raise the lifetime, you
 get quite a few overlapping workers and thus more "parallel" processing power.
 Play around with it, but just don't shoot over the top.
 
 Also don't forget to set Configure key `'Queue.maxworkers'` to a reasonable value per server.
 If, for any reason, some of the jobs should take way longer, you want to avoid additional x workers to be started.
-It will then just not start now ones beyond this count until the already running ones are finished.
+It will then just not start new ones beyond this count until the already running ones are finished.
 This is an important server protection to avoid overloading.