docs: fix code highlight on homepage

[farnabaz]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Before:

After:

📝 Checklist

• I have linked an issue or discussion.
• I have run pnpm verify and it passes.
• I have updated the documentation accordingly.

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Project	Deployment	Actions	Updated (UTC)
comark	Ready	Preview	Jul 30, 2026 11:40am
comark-json-render	Ready	Preview	Jul 30, 2026 11:40am
comark-nextjs	Ready	Preview	Jul 30, 2026 11:40am
comark-nuxt	Ready	Preview	Jul 30, 2026 11:40am
comark-svelte	Ready	Preview	Jul 30, 2026 11:40am
comark-sveltekit	Ready	Preview	Jul 30, 2026 11:40am
comark-twoslash	Ready	Preview	Jul 30, 2026 11:40am
comark-vue	Ready	Preview	Jul 30, 2026 11:40am

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commit: f9ea33e