Update all CardList links to absolute and add guidance

[alexandratran]

Description

• Update all remaining CardList hrefs to absolute URL paths. This is the simplest way to fix the inconsistent CardList link behavior on Vercel deployments, as absolute links consistently work, while relative links have inconsistent and unpredictable behavior.
• Update contribution guide with info on formatting links.
• Fix some other new link errors and update linkspector config for false positives.

Issue(s) fixed

Fixes #2475

Preview

https://metamask-docs-au1c2h7pp-consensys-ddffed67.vercel.app/smart-accounts-kit

Checklist

• If this PR updates or adds documentation content that changes or adds technical meaning, it has received an approval from an engineer or DevRel from the relevant team.
• If this PR updates or adds documentation content, it has received an approval from a technical writer.

External contributor checklist

• I've read the contribution guidelines.
• I've created a new issue (or assigned myself to an existing issue) describing what this PR addresses.

---

Note

Converts CardList links to absolute paths across docs, updates CONTRIBUTING with link formatting guidance, and tweaks link checker ignores and external URLs.

• Docs:
  • Update CardList href values to absolute paths across developer-tools, smart-accounts-kit (and versioned gator_versioned_docs), and multiple services/reference/* index pages.
  • Edit CONTRIBUTING.md:
    • Add "Format links" section clarifying relative vs absolute and CardList usage.
    • Update content directories and sidebar files list; revise image directories.
  • Fix external links: ConnectKit docs URL; 0xFury privacy policy URLs.
• Tooling/Config:
  • .linkspector.yml: add ignore patterns for https://web3onboard.thirdweb.com and https://0xfury.com/privacy.

^{Written by Cursor Bugbot for commit 5973391. This will update automatically on new commits. Configure here.}

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Preview	Comments	Updated (UTC)
metamask-docs	Ready	Preview	Comment	Nov 19, 2025 3:36am

[bgravenorst]

lgtm