Add notes on cryptcheck and backups to crypt docs
Add notes on cryptcheck and backups to crypt docs

B4dM4n/rclone,seuffert/rclone,seuffert/rclone,ncw/rclone,yonjah/rclone,B4dM4n/rclone,ncw/rclone,olihey/rclone,B4dM4n/rclone,yonjah/rclone,olihey/rclone,seuffert/rclone,seuffert/rclone,yonjah/rclone,olihey/rclone,yonjah/rclone,ncw/rclone,B4dM4n/rclone,ncw/rclone,olihey/rclone