Add and fix description of the current values for fingerWith field and related constants along with future expectations for the same. The latest explainted as TODO item. Change-Id: I876a9cf03a935309159401a6c88d9047bf225f90 Reviewed-on: https://review.haiku-os.org/c/haiku/+/9863 Reviewed-by: waddlesplash <[email protected]> Tested-by: Commit checker robot <[email protected]>