Light Freshness Edit: ASP.NET - Config Cert Auth (#37064)

* refresh content

* edits

* edits

* edits for Acrolinx

* Edits per review feedback

* Apply suggestions from code review

Co-authored-by: Wade Pickett <wpickett@microsoft.com>

* Update certauth.md

Changing ms.author to person responsible for the day to day update of the article going forward.  Adding shalter as reviewer per development team.

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Co-authored-by: Wade Pickett <wpickett@microsoft.com>

Author: GitHubber17