OSIS-3949 update documentation to the ValidatorPatcherMixin
OSIS-3949 update documentation to the ValidatorPatcherMixin

uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/osis