COM-272: Update documentation - update UPGRADE.md
COM-272: Update documentation
- update UPGRADE.md

orocrm/platform,geoffroycochard/platform,trustify/oroplatform,Djamy/platform,orocrm/platform,geoffroycochard/platform,Djamy/platform,Djamy/platform,trustify/oroplatform,trustify/oroplatform,orocrm/platform,geoffroycochard/platform