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Update docs/en/operations/server-configuration-parameters/settings.md

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Co-authored-by: olgarev <56617294+olgarev@users.noreply.github.com>
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docs/en/operations/server-configuration-parameters/settings.md
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@ -448,7 +448,7 @@ This section contains the following parameters:
- `allow_empty` — If `true`, then other replicas are allowed to connect without authentication even if credentials are set. If `false`, then connections without authentication are refused. Default value: `false`.
- `old` — Contains old `user` and `password` used during credential rotation. Several `old` sections can be specified.
**Credential Rotation**
**Credentials Rotation**
ClickHouse supports dynamic interserver credential rotation without the need of stopping all replicas at the same time to update their configuration. Credentials can be changed in several steps.