[Backport 2.x] Update URLs referencing old docs-beta site

[opensearch-trigger-bot]

Backport e15b6fc from #1231

[codecov-commenter]

Codecov Report

Merging #1330 (1bca8f5) into 2.x (f28a095) will not change coverage.
The diff coverage is n/a.

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@@           Coverage Diff           @@
##              2.x    #1330   +/-   ##
=======================================
  Coverage   71.78%   71.78%           
=======================================
  Files          88       88           
  Lines        2027     2027           
  Branches      274      274           
=======================================
  Hits         1455     1455           
  Misses        509      509           
  Partials       63       63           

Impacted Files	Coverage Δ
public/apps/configuration/constants.tsx	85.71% <ø> (ø)
...n/panels/internal-user-edit/backend-role-panel.tsx	100.00% <ø> (ø)
.../panels/role-mapping/external-identities-panel.tsx	100.00% <ø> (ø)

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