Fix typo in nav example code

[carbonrobot]

Fixes a typo in the example code that was incorrectly missing the value of the property.

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
nuka-carousel-website	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 7, 2025 3:10pm

[changeset-bot]

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Latest commit: 29317fe

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