Add 'Additional Notes' for NTLM Block error

[vbrennydossa]

When the certificate replacement is executed by an account that is member of 'Protected Users', the NTLM authentication is blocked (and it's used by the replacement). This is documented in the Protected Users page, but not in the certificate replacement page. Currently, the only occurrence of the scenario is under a forum post. Updating here because it would have saved me 3 days of troubleshooting in a recent case, and may save others :)

[prmerger-automator]

@vbrennydossa : Thanks for your contribution! The author(s) have been notified to review your proposed change. @jenfieldmsft

[opbld32]

Learn Build status updates of commit 79ec54e:

✅ Validation status: passed

File	Status	Preview URL	Details
WindowsServerDocs/identity/ad-fs/operations/manage-ssl-certificates-ad-fs-wap.md	✅Succeeded

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[Jak-MS]

#assign: @robinharwood, @Xelu86

Can you review the proposed changes? New content should be submitted via the private repo to benefit from staging, validation, and Acrolinx checks. Let us know if you'd like assistance with moving the commits into the private repo.
Note that the file name needs to be revised to meet the file naming guidelines and the new article should be added to a TOC.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team

[prmerger-automator]

The following users don't have valid GitHub IDs, or are not collaborators on this repo: robinharwood xelu86