Update family repo for a bug in products export

Generating this error for product export : 
Argument 2 passed to Pim\Bundle\CatalogBundle\Entity\Repository\FamilyRepository::getFullFamilies() must be an instance of Pim\Bundle\CatalogBundle\Entity\Repository\Channel, instance of Pim\Bundle\CatalogBundle\Entity\Channel given, called in vendor/akeneo/pim-community-dev/src/Pim/Bundle/CatalogBundle/Doctrine/MongoDBODM/CompletenessGenerator.php