2 string references to 'aggregator_refresh'

aggregator_cron_queue_info in modules/aggregator/aggregator.module: Implements hook_cron_queue_info().
hook_cron_queue_info in modules/system/system.api.php: Declare queues holding items that need to be run periodically.

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.