[Docs] Fix broken links in Newcomers map and enable Community Handbook

[phoenixcodeforces-blip]

Description

This PR fixes #2348 by resolving all broken links in the Newcomers map and implementing accessibility improvements.

Changes Made

Fixed Broken Links (4 total)

1. Newcomers' Guide - Changed from broken external link to local /newcomers page
2. Repository Overview - Changed from non-functional handbook link to https://github.com/meshery/meshery
3. Community Handbook - Enabled page publication by removing published: false from collections/_pages/handbook.html
4. Community Page Link - Updated Newcomers Journey link to /newcomers

Additional Improvements

• Added aria-label attributes to all links for screen reader accessibility
• Fixed typo: "community calender" → "community calendar"
• Configured proper link behavior (local links in same tab, external links in new tab with security attributes)
• Fixed markdown linting error in collections/_handbook/about.md

Files Modified

_includes/newcomers-map.html community.html _includes/partials/community.html collections/_handbook/about.md collections/_pages/handbook.html

Verification

All links in the Newcomers map tested and verified working:

• ✅ Newcomers' Guide, Find a Meshmate, Newcomers' Meeting, Community Guide, Repository Overview

Notes for Reviewers

All changes tested for linting errors. Accessibility improvements follow WCAG guidelines.

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[gemini-code-assist]

Summary of Changes

Hello @phoenixcodeforces-blip, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the user experience for newcomers by resolving several broken links across the Newcomers map and community pages. It also improves accessibility by adding aria-label attributes to links and activates the Community Handbook, making valuable resources readily available. These changes ensure a smoother onboarding process and better navigation for community members.

Highlights

• Link Fixes: Addressed four broken links within the Newcomers map and related community pages, redirecting them to correct local paths or the Meshery GitHub repository.
• Accessibility Enhancements: Integrated aria-label attributes across various links to improve screen reader compatibility and overall accessibility.
• Community Handbook Activation: Enabled the Community Handbook page by removing its published: false flag, making it accessible to users.
• Typographical Correction: Fixed a minor typo from "community calender" to "community calendar" for improved accuracy.
• Link Behavior Standardization: Configured links to open local pages in the same tab and external links in new tabs with appropriate security attributes (rel="noreferrer").
• Markdown Linting: Resolved a markdown linting error by removing an extraneous blank line in the handbook's about.md file.

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[gemini-code-assist]

Code Review

This pull request effectively addresses broken links in the Newcomers map and enhances accessibility by adding aria-label attributes. The changes are clear and align with the description. My review includes a couple of suggestions to ensure consistency in handling external links across all modified files, aligning with the PR's goal of opening them in a new tab with appropriate security attributes. Overall, this is a valuable contribution to improving the site's usability and accessibility.

[Namanv0509]

@phoenixcodeforces-blip can you look over the merge conflicts .

The community guide should ideally be going to https://meshery.io/community/ , as handbook is not there

[phoenixcodeforces-blip]

@Namanv0509
Thank you for your review, I will fix it.

[phoenixcodeforces-blip]

Hi @Namanv0509
I have made the changes as instructed by you and I have resolved the conflicts,
Please review it, and suggest if any changes are required.

Thank you.