Update links to google-cloud-node and google-cloud-php landing pages (#1192)
Update links to google-cloud-node and google-cloud-php landing pages (#1192)


FirebasePrivate/google-cloud-java,tangiel/google-cloud-java,shinfan/gcloud-java,vam-google/google-cloud-java,vam-google/google-cloud-java,jabubake/google-cloud-java,jabubake/google-cloud-java,shinfan/gcloud-java,vam-google/google-cloud-java,rborer/google-cloud-java,jabubake/google-cloud-java,rborer/google-cloud-java,omaray/google-cloud-java,FirebasePrivate/google-cloud-java,mbrukman/gcloud-java,omaray/google-cloud-java,mbrukman/gcloud-java,tangiel/google-cloud-java,mbrukman/gcloud-java,shinfan/gcloud-java,tangiel/google-cloud-java,omaray/google-cloud-java,FirebasePrivate/google-cloud-java,tangiel/google-cloud-java,jabubake/google-cloud-java,FirebasePrivate/google-cloud-java,jabubake/google-cloud-java,omaray/google-cloud-java,omaray/google-cloud-java,rborer/google-cloud-java,FirebasePrivate/google-cloud-java,vam-google/google-cloud-java,rborer/google-cloud-java,vam-google/google-cloud-java,shinfan/gcloud-java,rborer/google-cloud-java,mbrukman/gcloud-java,vam-google/google-cloud-java,shinfan/gcloud-java,tangiel/google-cloud-java