Update migrations/20190515180630-updates-is-private.js
Update migrations/20190515180630-updates-is-private.js

Co-Authored-By: Benjamin Piouffle <826bfacb09020d542da7389c49c4544ab0f6e3d6@gmail.com>
OpenCollective/opencollective-api,OpenCollective/opencollective-api,OpenCollective/opencollective-api