Update get-api-cookie.ts

[dirheimerb]

Added the types for req and res.

Bug

• Related issues linked using fixes #number
• Integration tests added
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Feature

• Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
• Related issues linked using fixes #number
• e2e tests added
• Documentation added
• Telemetry added. In case of a feature if it's used or not.
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Documentation / Examples

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• The "examples guidelines" are followed from [our contributing doc]

Here is the documentation followed Nextjs Link

[leerob]

Thanks!