Need to update the URL to include substrate.office.com to the list

[nmanis]

For answer to the URLs for this question: https://github.com/MicrosoftDocs/Azure-RMSDocs/blob/master/mip/develop/faqs-known-issues.md#error-proxyautherror-exception

The docs need to be updated to have added to the list: substrate.office.com

(or at least updated to state to use line 147 for *.office.com from here: https://learn.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?view=o365-worldwide)

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Document Details

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• ID: 4996bbfa-3a0d-9087-a5e5-787c8b49a5a4
• Version Independent ID: 954748ed-4a30-92fb-1b4f-02e3ed049243
• Content: FAQs and known issues - Microsoft Information Projection SDK.
• Content Source: mip/develop/faqs-known-issues.md
• Service: information-protection
• GitHub Login: @msmbaldwin
• Microsoft Alias: mbaldwin