acd docs: clarify --max-size only ignoring files (not splitting)
acd docs: clarify --max-size only ignoring files (not splitting)

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