tlf_journal: fix comment typo caught by @akalin-keybase
tlf_journal: fix comment typo caught by @akalin-keybase

Issue; #422

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