Steps to reproduce

1. http://googleapis.github.io/google-cloud-java/google-cloud-clients/apidocs/index.html?com/google/cloud/pubsub/v1/package-summary.html
2. Go to Publisher
3. Links for com.google.api.core.ApiFuture are broken.
4. Go to Subscriber
5. Links for com.google.api.core.AbstractApiService are broken.
6. etc.