docs: add instructions for updating from open source repo
docs: add instructions for updating from open source repo

pact-foundation/pact_broker,tancnle/pact_broker,pact-foundation/pact_broker,tancnle/pact_broker,pact-foundation/pact_broker,tancnle/pact_broker,tancnle/pact_broker,pact-foundation/pact_broker