Update documentation for UploadStrategy

[MJ1998]

Description Updating documentation for UploadStrategy

Alternative(s) considered Have you considered any alternatives? And if so, why have you chosen the approach in this PR?

Type Choose one: (Bug fix | Feature | Documentation | Testing | Code health | Builds | Releases | Other)

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Checklist

• [ ] I have read and acknowledged the Code of conduct.
• [ ] I have read the Contributing page.
• [ ] I have signed the Google Individual CLA, or I am covered by my company's Corporate CLA.
• [ ] I have discussed my proposed solution with code owners in the linked issue(s) and we have agreed upon the general approach.
• [ ] I have run ./gradlew spotlessApply and ./gradlew spotlessCheck to check my code follows the style guide of this project.
• [ ] I have run ./gradlew check and ./gradlew connectedCheck to test my changes locally.
• [ ] I have built and run the demo app(s) to verify my change fixes the issue and/or does not break the demo app(s).