Issue #3559765: Fix broken links in metatag tag plugin documentation.

Sammy Gitukorequested to merge
issue/metatag-3559765:3559765-fix-metatag-broken-links into 8.x-1.x

Closes #3559765

Summary

Fixes broken external links in metatag tag plugin documentation.

Changes

  • SetCookie: metatags.org → MDN docs
  • Rating: Removed broken metatags.org link
  • Google: 404 webmasters link → Search Central docs
  • Expires: csgnetwork.com → IETF RFC
  • Standout/NewsKeywords: Removed broken Google News links (404)

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