chore(docusaurus): upgrade Docusaurus to v3.10.1 and remove deprecated markdown link configuration warnings

[yashisrani]

Summary

The build output currently shows:

• Docusaurus update available: 3.9.2 → 3.10.1
• Deprecated configuration warning for siteConfig.onBrokenMarkdownLinks

This results in noisy build logs and may cause issues when upgrading to Docusaurus v4.

Current Warning

Proposed Changes

Upgrade Docusaurus packages

• Update the following dependencies to the latest compatible version
• Migrate deprecated configuration
• Verify build output

Ensure:

• No deprecated configuration warnings are displayed
• Production build completes successfully
• All locales (en, zh-Hans) build successfully
• Terminal output remains clean

Acceptance Criteria

• Docusaurus upgraded from 3.9.2 to 3.10.1 (or latest stable version)
• onBrokenMarkdownLinks migrated to markdown.hooks.onBrokenMarkdownLinks
• No deprecation warnings during build
• Multi-locale build passes successfully
• CI/build pipeline remains green

No warning messages should appear in the terminal output.

[safiya2610]

@yashisrani I'm taking this issue, I will make PR soon.

[safiya2610]

/assign

[vanshika2720]

@yashisrani I have raised a #533 PR for this . Please check it out

[safiyanasir2610]

@yashisrani #534 you can review my PR.

Why I changed the comment syntax:
Docusaurus v3 upgraded its engine to the stricter MDX v3 parser. The new parser treats old HTML comments () as invalid Javascript code and crashes the build, so they had to be updated to the proper MDX format ({/* */}) to keep the site running.