Fix duplicate archived_version key in hugo.yaml

[Pittu-Sharma]

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Description

Removed the duplicate archived_version key in hugo.yaml. The key was defined twice (at lines 129 and 139), which causes hugo server to fail on startup with:

[nelson-parente]

Pre-review for @marcduiker handoff: LGTM with one conflict note.

• Removes duplicate archived_version key from hugo.yaml — correct fix, the duplicate would break hugo server.
• The maintainer-guide changes (azd login → azd auth login, remove stale SDK pull section, add default-branch step) are correct.
• Warning: this PR overlaps with #5083 and #5130 from the same author — all three touch maintainer-guide.md with the same changes. Marc, only one of these should be merged; the others will conflict. Recommend picking one and closing the duplicates.
  Safe to merge after CI (resolve overlap with #5083 and #5130 first).