docs: cleanup HA operator manual (cherry-pick #10409)

[gcp-cherry-pick-bot]

Cherry-picked docs: cleanup HA operator manual (#10409)

Signed-off-by: Prasad Katti prasadmkatti@gmail.com
Co-authored-by: Michael Crenshaw 350466+crenshaw-dev@users.noreply.github.com

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (ccd7f76) 46.83% compared to head (ccd7f76) 46.83%.

❗ Current head ccd7f76 differs from pull request most recent head cbe10d3. Consider uploading reports for the commit cbe10d3 to get more accurate results

Additional details and impacted files

@@             Coverage Diff              @@
##           release-2.5   #12866   +/-   ##
============================================
  Coverage        46.83%   46.83%           
============================================
  Files              239      239           
  Lines            39678    39678           
============================================
  Hits             18584    18584           
  Misses           19221    19221           
  Partials          1873     1873           

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