Ash Framework: inconsistent atom/string p137

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Code samples generally use atoms for the role value:

policy action(:destroy) do
    authorize_if actor_attribute_equals(:role, :admin)
end

This example switches to a string on the same page.

policy action(:force_update) do
    authorize_if actor_attribute_equals(:role, "admin")
end

Unsure if it technically matters, but could be confusing to the reader.