ops: comment on `pathSortedOps`
ops: comment on `pathSortedOps`

Suggested by songgao.

Issue; #1631

keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/kbfs,keybase/client,keybase/kbfs,keybase/kbfs,keybase/client,keybase/client,keybase/client