Expand Docs on Using XLRs for Validations

[KetanReddy]

Closes #465

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Release Notes

Docs: Expanded content validation Docs

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.83%. Comparing base (12cdc54) to head (92195b2).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #784   +/-   ##
=======================================
  Coverage   85.83%   85.83%           
=======================================
  Files         505      505           
  Lines       22794    22794           
  Branches     2656     2656           
=======================================
  Hits        19565    19565           
  Misses       2900     2900           
  Partials      329      329           

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