Terraform Test: Parallel Execution

[rMaxiQp]

On https://github.com/hashicorp/web-unified-docs/blob/main/content/terraform/v1.13.x/docs/language/tests/index.mdx, we have an example usage for Parallel Execution. The last run block is:

run "site_eight" {
  // This run block is entirely unrelated to the other run blocks, however, because `site_four`,
  // which is one of its preceding runs has the `parallel` attribute set to `false`,
  // it cannot run until site_four is completed. It can be executed in parallel with `site_five` and `site_six`.
  state_key = "unique_7"
  variables {
    input = "yet_another_external_db"
  }

  assert {
    condition = output.value == var.foo
    error_message = "double bad"
  }
}

site_eight has a state_key of unique_7, which is same as site_six and same_state. Is sounds like conflicting with the comment's claim and also previous documentation since these three run blocks share the same state. Is it intended to be unieuq_8 instead?