Update link to the docs

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hack/upgrade-notice.md

@@ -1,4 +1,4 @@
 ⚠️ Upgrading the cluster-operator to this version will update RabbitMQ clusters (i.e. will cause rolling update of the underlying StatefulSets).
 If you want to control when a RabbitMQ cluster gets updated, make sure to pause reconciliation before upgrading the cluster-operator.
 After upgrading the cluster-operator, resume reconciliation whenever it's safe to update the RabbitMQ cluster.
-See [Pause reconciliation for a RabbitMQ cluster](https://github.com/rabbitmq/rabbitmq-website/blob/live/site/kubernetes/operator/using-operator.md#pause-reconciliation-for-a-rabbitmqcluster).
+See [Pause reconciliation for a RabbitMQ cluster](https://www.rabbitmq.com/kubernetes/operator/using-operator#pause).