docs: add how to contribute blade

[kavishkafernando]

Purpose

Add how to contribute blade to the community page
https://github.com/wso2-enterprise/marketing-team/issues/6071

Related Issues

Include any related issues that are resolved by this PR.

Checklist

• Updated sidebars.ts if adding a new documentation page
• Run npm run start to preview the changes locally
• Run npm run build to ensure the build passes without errors
• Verified all links are working (no broken links)

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 3aa1b6bc-e63d-47bb-9f35-1d699000c7f1

📥 Commits

Reviewing files that changed from the base of the PR and between d6d9ed6 and 5a5f441.

📒 Files selected for processing (2)

• src/pages/community/index.tsx
• src/pages/community/styles.module.css

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📝 Walkthrough

Summary by CodeRabbit

• New Features

  • Added a “How to contribute” section to the Community page.
  • Introduced contribution cards with guidance, icons, and links for different ways to participate.
  • Added responsive layouts for contribution cards on smaller screens.

• Style

  • Improved Community page spacing and mobile card presentation.

Walkthrough

The Community page adds a “How to contribute” section with three icon-backed contribution cards, CTA links, and responsive grid styling. The page’s default section padding is also reduced.

Changes

Community contribution section

Layer / File(s)	Summary
Contribution actions and card rendering src/pages/community/index.tsx	Defines contribution actions and inline SVG icons, then renders each action as a card with descriptive text and a CTA link.
Contribution card layout and responsiveness src/pages/community/styles.module.css	Adds contribution grid and card styles, responsive single-column layouts, mobile card adjustments, and reduced section padding.

Estimated code review effort: 2 (Simple) | ~10 minutes

Possibly related PRs

• openchoreo/openchoreo.github.io#708: Established the Community page files that this change extends.

Suggested reviewers: yashodgayashan

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise and clearly matches the main change: adding a How to contribute section to the community page.
Description check	✅ Passed	The description includes a clear purpose, issue reference, and checklist, though Related Issues is not filled in.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[LakshanSS]

LGTM