[release-1.23] Fix: broken links when regenerating archive docs

[istio-testing]

Manual cherrypick required.

#16747 failed to apply on top of branch "release-1.23":

Applying: Fix broken links
Using index info to reconstruct a base tree...
M	layouts/_default/baseof.html
Falling back to patching base and 3-way merge...
Auto-merging layouts/_default/baseof.html
CONFLICT (content): Merge conflict in layouts/_default/baseof.html
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config advice.mergeConflict false"
Patch failed at 0001 Fix broken links