fix(readme): Change gitter link to slack. + Minor typo
fix(readme): Change gitter link to slack. + Minor typo

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