message: fix(docs): reference docs should link to section of googleapis.dev with API reference
diff: @@ -119,10 +119,12 @@ Apache Version 2.0
  See [LICENSE](https://github.com/googleapis/nodejs-pubsub/blob/master/LICENSE)
  -[client-docs]: https://googleapis.dev/nodejs/pubsub/latest
  +[client-docs]: https://googleapis.dev/nodejs/pubsub/latest#reference
  [product-docs]: https://cloud.google.com/pubsub/docs/
  [shell_img]: https://gstatic.com/cloudssh/images/open-btn.png
  [projects]: https://console.cloud.google.com/project
  [billing]: https://support.google.com/cloud/answer/6293499#enable-billing
  [enable_api]: https://console.cloud.google.com/flows/enableapi?apiid=pubsub.googleapis.com
  [auth]: https://cloud.google.com/docs/authentication/getting-started
  +
  +<a name="reference"></a>
  