Review existence of `redis` credentials in `nats` integration article.

[narslan]

Here, https://clickhouse.com/docs/en/engines/table-engines/integrations/nats
Under the section Writing to NATS table, the last part mentions about Redis in a sentence:

The NATS server configuration can be added using the ClickHouse config file. More specifically you can add Redis password for NATS engine:

What is that about? Why would somebody need redis password for nats integration?