Update light.md to mention toggle support

[ams2990]

Also fix a missing block quote close.

Proposed change

Update light documentation to match home-assistant/core#156196.

Type of change

• Document existing features within Home Assistant
• Document new or changing features for which there is an existing pull request elsewhere
• Spelling or grammatical corrections, or rewording for improved clarity
• Changes to the backend of this documentation
• Remove stale or deprecated documentation

Checklist

• I have read and followed the documentation guidelines.
• I have verified that my changes render correctly in the documentation.

Additional information

• This PR fixes or closes issue: fixes #
• Link to relevant existing code or pull request: Change light.toggle service call to invoke LightEntity.async_toggle core#156196

Summary by CodeRabbit

• Documentation
  • Added new "Toggle Light Device" example for lights with async toggle method documentation
  • Added no-sync toggle tip for improved light control guidance

[ams2990]

@arturpragacz

[coderabbitai]

📝 Walkthrough

Walkthrough

Documentation update to the light entity file adds a new example demonstrating how to toggle light devices using an async_toggle method. The change includes a closing code fence correction and a tip for no-sync toggle behavior.

Changes

Cohort / File(s)	Summary
Documentation docs/core/entity/light.md	Added "Toggle Light Device" example section with async_toggle method implementation and no-sync toggle usage tip.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'Update light.md to mention toggle support' directly relates to the main change of adding toggle support documentation to the light.md file.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description check	✅ Passed	The PR description follows the required template structure with all major sections completed, including proposed change, type of change selection, checklist items, and additional information with link to relevant core PR.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@docs/core/entity/light.md`:
- Around line 174-187: The doc incorrectly states sync toggle isn't supported;
update the Toggle Light Device section for LightEntity to reflect that toggle()
is available (inherited from ToggleEntity) and show both sync and async variants
(toggle and async_toggle) or explicitly state toggle is inherited and recommend
implementing turn_on/turn_off instead; reference LightEntity, ToggleEntity,
toggle(), async_toggle(), turn_on, and turn_off so readers can find the
implementation points.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 43776e2b-e9a5-4be3-ac2f-9615a0394669

📥 Commits

Reviewing files that changed from the base of the PR and between 974c323 and 26d66df.

📒 Files selected for processing (1)

• docs/core/entity/light.md