docs: no ids for h3 headings, leading to 404 links

[iamzee]

Describe the bug and the expected behavior

On page https://conform.guide/complex-structures#array, when I click on the link "Intent Button", it shows 404, it should link to https://conform.guide/intent-button page and [ Insert, remove and reorder intents ] section.

This is heppening because on https://conform.guide/intent-button page, [ Insert, remove and reorder intents ] section is an h3 tags and the ids are only generated for h2 tags. That's why the link is unable to redirect to that page.

Check this line

conform/guide/app/markdoc.tsx

Line 61 in a70aa89

attributes.level === 2

I guess, it should also generate ids for attributes.level === 3

Conform version

1.0.0

Steps to Reproduce the Bug or Issue

(Mentioned in issue description)

What browsers are you seeing the problem on?

No response

Screenshots or Videos

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Additional context

No response