Docs: health_report/indicator/diagnosis/affected_resources value type mismatch

[yaauie]

Elasticsearch Version

8.13.0

Installed Plugins

No response

Java Version

bundled

OS Version

NA

Problem Description

The docs claim that an indicator's diagnosis' affected_resources is an "(Optional, array of strings)":

`affected_resources`::
    (Optional, array of strings) If the root cause pertains to multiple resources in the
    cluster (like indices, shards, nodes, etc...) this will hold all resources that this
    diagnosis is applicable for.

-- docs/reference/health/health.asciidoc:206-209@v8.13.0

I am observing that the value can be an object that contains a mapping of strings to arrays-of-strings:

        {
          "id": "elasticsearch:health:shards_availability:diagnosis:increase_tier_capacity_for_allocations:tier:data_content",
          "cause": "Elasticsearch isn't allowed to allocate some shards from these indices to any of the nodes in the desired data tier because there are not enough nodes in the [data_content] tier to allocate each shard copy on a different node.",
          "action": "Increase the number of nodes in this tier or decrease the number of replica shards in the affected indices.",
          "help_url": "https://ela.st/tier-capacity",
          "affected_resources": {
            "indices": [
              "logstash-test"
            ]
          }
        }

-- GET /_health_report

I do not have enough context to know whether the shape is always a map of resource-type to list-of-resources, or if that is simply the case for the diagnosis with id elasticsearch:health:shards_availability:diagnosis:increase_tier_capacity_for_allocations:tier:data_content.

Steps to Reproduce

GET /_health_report

Logs (if relevant)

No response

[elasticsearchmachine]

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