docs: update webhook documentation with the new event type
docs: update webhook documentation with the new event type

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