cluster: Fix typo in comment (#1668)
cluster: Fix typo in comment (#1668)

Signed-off-by: JoeWrightss <1307e474708ef2b3861f4fdec84b75b2c3a221f4@daocloud.io>
prometheus/alertmanager,GoogleCloudPlatform/alertmanager,prometheus/alertmanager,GoogleCloudPlatform/alertmanager,prometheus/alertmanager,GoogleCloudPlatform/alertmanager,prometheus/alertmanager,GoogleCloudPlatform/alertmanager