fix: improve heading hierarchy in main page

[Kavyamanchanpally]

Description

Fixed heading hierarchy in the main page for accessibility and SEO.
Changed

to

in the Section component inside VideoEditor.tsx
so that heading levels are no longer skipped (h1 → h2 instead of h1 → h3).

Related Issue

Fixes #69

Type of Contribution

• Bug fix
• New feature
• Documentation update
• Refactor
• GSSoC contribution

Participant Info

• GitHub username: Kavyamanchanpally
• Contribution level: Beginner

Screen Recording

Recording.2026-06-05.171134.mp4

Checklist

• I have read the contribution guidelines
• My changes follow the project structure
• I have tested my changes in Chrome, Firefox, and Safari
• bun run lint passes (no ESLint errors)
• bunx tsc --noEmit passes (no TypeScript errors)
• New interactive elements have aria-label / accessible names
• No console.log statements left in
• This PR is related to a valid issue
• Screen recording attached above (required for UI/feature/design changes)

[vercel]

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[github-actions]

👋 Thanks for your PR, @Kavyamanchanpally!

Welcome to Reframe — a browser-based video editor built for everyone 🎬

🟠 GSSoC'26 PR detected — thanks for contributing under GirlScript Summer of Code 2026!

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Quick checklist

• PR title follows Conventional Commits (e.g. feat: add dark mode)
• Linked the issue this PR closes (e.g. Closes #123)
• Tested the changes locally (bun run dev)
• Build passes (bun run build)

Useful links

• 📖 CONTRIBUTING.md
• 🐛 Open Issues
• ⭐ Star the repo to support the project!

Happy coding! 🎉

[github-actions]

✅ PR Format Check Passed — @Kavyamanchanpally

Basic format checks passed. A maintainer will review your code changes.

This does not mean the PR is approved — it just means the format is correct.

[Kavyamanchanpally]

@magic-peach
I have completed the requested fix for Issue #69 and verified the changes locally. The PR is currently waiting for workflow approval and review.

Could someone please review the PR when available?