message: docs(sample): regional endpoint in publish ordered message sample
diff: @@ -47,7 +47,11 @@ async function main(
  const {PubSub} = require('@google-cloud/pubsub');
  // Creates a client; cache this for further use
  - const pubSubClient = new PubSub();
  + const pubSubClient = new PubSub({
  + // Sending messages to the same region ensures they are received in order
  + // even when multiple publishers are used.
  + apiEndpoint: 'us-east1-pubsub.googleapis.com:443',
  + });
  async function publishOrderedMessage() {
  // Publishes the message as a string, e.g. "Hello, world!" or JSON.stringify(someObject)
  