docs: update snippets for tour and tree view

[dangvanthanh]

📝 Description

update snippets for tour and tree view

⛳️ Current behavior (updates)

• api.step is possibly 'null' in tour
• Toolbar in tree view is unused

🚀 New behavior

• update api.step? in tour.vue and steps data missing in code snippet
• remove Toolbar and update import type { Api } from "@zag-js/tree-view" for TreeNode.vue

💣 Is this a breaking change (Yes/No):

No

📝 Additional Information

[changeset-bot]

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Latest commit: 9d86851

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[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated (UTC)
zag-solid	✅ Ready (Inspect)	Visit Preview	Nov 3, 2024 2:12pm
zag-svelte	✅ Ready (Inspect)	Visit Preview	Nov 3, 2024 2:12pm
zag-vue	✅ Ready (Inspect)	Visit Preview	Nov 3, 2024 2:12pm
zag-website	✅ Ready (Inspect)	Visit Preview	Nov 3, 2024 2:12pm

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commit: 9d86851