Update response-objects.md

[Kbass85]

Changed Publisher to Publisher[] in Video object documentation. Custom Search is returning a json with Publisher[] for the publisher property for the Video class. This is my first pull request, please inform me if I am not following best practices

[learn-build-service-prod]

Learn Build status updates of commit 4fb78df:

💡 Validation status: suggestions

File	Status	Preview URL	Details
bing-docs/bing-custom-search/reference/response-objects.md	💡Suggestion	View	Details

bing-docs/bing-custom-search/reference/response-objects.md

• Line 11, Column 12: [Suggestion: ms-author-invalid - See documentation] Invalid value for 'ms.author', 'v-apunnamara' is not a valid Microsoft alias.

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