Preparing resources documentation for Audio Worklets playground.

[Kizjkre]

Added a comment to landing_data in anticipation of the Audio Worklets playground.

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[hoch]

The PR looks great.

Now this PR has a real purpose, so can we add a proper title/description for the PR?

Refer this guidance if needed: https://google.github.io/eng-practices/review/developer/cl-descriptions.html

[Kizjkre]

Done! Please let me know if this looks good now.

[hoch]

@Kizjkre Can you resolve conflict so we can merge this?

[Kizjkre]

Yes, just resolved!