Fix vocabulary reference

Julien LepillerSat May 02 23:54:45+0200 2020

27dd838

guile-fediverse/activitystreams
namelast commitdate
ontology.scmRework the activitystreams implementation and vocabulariesFri May 01 04:02:41+0200 2020
predicates.scmRework the activitystreams implementation and vocabulariesFri May 01 04:02:41+0200 2020
vocabulary.scmRework the activitystreams implementation and vocabulariesFri May 01 04:02:41+0200 2020