Update doc

[bjason]

ℹ️ Description

provide a summary of the changes and the related issue, relevant motivation and context

Issue #, if available

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
  • README update
  • CHANGELOG update
  • guides update
• This change requires a dependency update
  • Amazon Chime SDK Media
  • Other (update corresponding legal documents)

🧪 How Has This Been Tested?

describe the tests that you ran to verify your changes, any relevant details for your test configuration

Additional Manual Test

• Pause and resume remote video
• Switch local camera
• Rotate screen back and forth

📱 Screenshots, if available

provide screenshots/video record if there's a UI change in demo app

✅ Checklist

Integration validation (required before release)

• Unit tests pass
• Build SDK against simulator with release options
• Build SDK against device with release options
• Build SDK against simulator with debug options
• Build SDK against device with debug options
• Test Demo against simulator with SDK (debug build) in workspace
• Test Demo against device with SDK (debug build) in workspace
• Test DemoObjC against simulator with SDK (debug build) in workspace
• Test DemoObjC against device with SDK (debug build) in workspace
• Test Demo against simulator with SDK.framework (release build)
• Test Demo against device with SDK.framework (release build)
• Test DemoObjC against simulator with SDK.framework (release build)
• Test DemoObjC against device with SDK.framework (release build)

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.