docs: add user content for managed-by-url annotation

[aali309]

Created docs for: #23266

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Codecov Report

✅ All modified and coverable lines are covered by tests.
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⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master   #25055   +/-   ##
=========================================
  Coverage          ?   62.29%           
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  Files             ?      351           
  Lines             ?    49213           
  Branches          ?        0           
=========================================
  Hits              ?    30659           
  Misses            ?    15637           
  Partials          ?     2917           

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[olivergondza]

Thanks, @aali309. The docs look good to me.