sandbox app ID update etc

[opbld33]

Docs Build status updates of commit 5282c2d:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
Advertising/bingads-13/guides/get-started-csharp.md	:bulb:Suggestion		Details
Advertising/bingads-13/guides/code-examples.md	:white_check_mark:Succeeded
Advertising/bingads-13/guides/get-started-java.md	:white_check_mark:Succeeded
Advertising/bingads-13/guides/get-started-php.md	:white_check_mark:Succeeded
Advertising/bingads-13/guides/get-started-python.md	:white_check_mark:Succeeded
Advertising/bingads-13/guides/walkthrough-desktop-application-csharp.md	:white_check_mark:Succeeded

Advertising/bingads-13/guides/get-started-csharp.md

• Line 20, Column 498: [Suggestion-docs-link-absolute] Absolute link 'https://docs.microsoft.com/dotnet/standard/net-standard' will be broken in isolated environments. Replace with a relative link.

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