Add documentation for the expiry values
Add documentation for the expiry values

// If these are not set, the auto expiration scripts in admin/expire
// do nothing.  You can still manually expire data in the admin UI without
// these values. There are software enforced mimimums for these values so you don't
// inadvertently wipe out your whole database using either the auto expire
// scripts or the admin expiry UI.
// $CFG->expire_pii_days = 150;  // Three months  (minimum 20)
// $CFG->expire_user_days = 400;  // One year (minimum 40)
// $CFG->expire_context_days = 600; // 1.5 Years (minimum 60)
// $CFG->expire_tenant_days = 800; // Two years (minimum 80)

tsugiproject/tsugi,csev/tsugi,tsugiproject/tsugi,tsugiproject/tsugi,tsugiproject/tsugi