Update entity field set

[uri-weisman]

1. What does this PR do?

This PR updates the Entity field set documentation to add two new entity types (cloud and orchestrator), enable usage at the root level of events, and introduce self-nesting via entity.target.

2. Which ECS fields are affected/introduced?

Added cloud and orchestrator as new allowed values for entity.type
Changed guidance to allow entity fields at the root of events (previously not expected)
Added entity.target to allow entity fields to be nested under themselves.

3. Why is this change necessary?

Clarify the nested target use.
Adds new supported types to entity.type

4. Have you added/updated documentation?

YES

5. Have you built ECS and committed any newly generated files?

YES

6. Have you run the ECS validation tests locally?

YES

7. Anything else for the reviewers?

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Commit Message

Added cloud and orchestrator as new allowed values for entity.type
Changed guidance to allow entity fields at the root of events (previously not expected)
Added entity.target to allow entity fields to be nested under themselves.

[github-actions]

Documentation changes preview: https://docs-v3-preview.elastic.dev/elastic/ecs/pull/2567/reference/

[github-actions]

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[github-actions]

🔍 Preview links for changed docs

• docs/reference/ecs-allowed-values-entity-type.md
• docs/reference/ecs-entity.md

[Copilot]

Pull Request Overview

This PR updates the Entity field set documentation to add two new entity types (cloud and orchestrator), enable usage at the root level of events, and introduce self-nesting via entity.target.

Key changes:

• Added cloud and orchestrator as new allowed values for entity.type
• Changed guidance to allow entity fields at the root of events (previously not expected)
• Added entity.target to allow entity fields to be nested under themselves

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
docs/reference/ecs-entity.md	Updates field reuse locations, allows root-level usage, and adds entity.target nesting section
docs/reference/ecs-allowed-values-entity-type.md	Adds documentation for two new entity.type values: cloud and orchestrator

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[trisch-me]

this needs to be removed

[trisch-me]

also this should be true

[uri-weisman]

@trisch-me - feels like a lot of auto generated files, let me know if that's expected.

[trisch-me]

lgtm except small refinement