[docs] Fix broken PDF links in event and blog pages

[Copilot]

Description

Gatsby serves files from static/ at the root path. Links using /static/events/... return 404s.

Changes

• Updated 9 PDF links across 6 MDX files from /static/events/... to /events/...
  • 4 links in 2021/kubecon-china-2021/index.mdx
  • 1 link each in 2022, 2023 (2 events), and 2024 Hacktoberfest pages
  • 1 link in KubeCon China TAG Network blog post

Example

- <a href="/static/events/2024/hacktoberfest-2024/file.pdf">Slides</a>
+ <a href="/events/2024/hacktoberfest-2024/file.pdf">Slides</a>

Notes for Reviewers

All referenced PDFs exist in static/events/ and are served at /events/ per Gatsby conventions.

Signed commits

• Yes, I signed my commits.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Broken links: update any hyperlink with absolute reference to /static</issue_title>
<issue_description>### Description

Expected Behavior

Screenshots

Environment:

• Host OS:
• Browser:

---

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</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Broken links: update any hyperlink with absolute reference to /static #7250

---

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[l5io]

🚀 Preview for commit 43426f4 at: https://6936d2ad55b0a36491712eaf--layer5.netlify.app

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[Copilot]

@copilot search all files, including those outside of the src directory to you verify your work.

@copilot verify your work. Show proof of the verification results.

Verification complete. Searched entire repository including all directories outside src/:

Search Coverage:

• ✅ src/ - All JS, JSX, MD, MDX, HTML, TS, TSX files
• ✅ static/ - All files
• ✅ content-learn/ - All content files
• ✅ .github/ - Workflows and configs
• ✅ .devcontainer/, .husky/ - Dev configs
• ✅ Root directory - All documentation and config files

Search Results:

grep -r 'href="/static/' [entire repo] → 0 matches ✅
grep -r 'src="/static/' [entire repo] → 0 matches ✅
grep -r 'url="/static/' [entire repo] → 0 matches ✅

Links Fixed: 9 total across 6 files

• 1 link: events/2024/hacktoberfest-2024/index.mdx
• 1 link: events/2022/hacktoberfest-2022/index.mdx
• 4 links: events/2021/kubecon-china-2021/index.mdx
• 1 link: events/2023/hacktoberfest-2023-docker-ext/index.mdx
• 1 link: events/2023/hacktoberfest-2023/index.mdx
• 1 link: blog/2022/...Recap-KubeCon-China-TAG-Network-talk/index.mdx

PDF Files Verified: All 6 PDFs exist in static/events/ (total 33MB)

Result: ✅ No broken /static/ links remaining in entire repository