Fix example usage.  [ci skip]
Fix example usage.  [ci skip]

nats-io/nats,ZebinKang/go-nats,nats-io/go-nats,nats-io/go-nats,wallyqs/go-nats,wallyqs/go-nats,apcera/nats,nats-io/nats,ZebinKang/go-nats,apcera/nats