fix: parent example renders non-existent value

[caseycarroll]

Fixes a minor mistake in the controllable docs. Example attempts to render count in the parent component, but that value doesn’t exist in that scope.

Also edit count examples to render count rather than input.count since we're assigning input.count to count in the <let>

Unsure if rendering input.count in the controllable examples was intentional. I'm open to removing that edit if it was.

[changeset-bot]

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Latest commit: ea230b2

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[linux-foundation-easycla]

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• ✅ login: caseycarroll / name: Casey Carroll (ea230b2)

[coderabbitai]

Walkthrough

Updated controllable counter examples to render local count state. Updated the binding-shorthand example to render the parent’s parentCount value.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description check	✅ Passed	The description clearly explains the documentation corrections and matches the changeset.
Title check	✅ Passed	The title clearly identifies the primary documentation fix involving a non-existent parent-scope value.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

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