chore: fix doc generation (#3433)
chore: fix doc generation (#3433)


chingor13/google-cloud-php,jdpedrie/google-cloud-php,googleapis/google-cloud-php,googleapis/google-cloud-php,jdpedrie/google-cloud-php,googleapis/google-cloud-php,chingor13/google-cloud-php,chingor13/google-cloud-php,jdpedrie/google-cloud-php