Use slugs for ids

[djfarrelly]

Summary

Our docs show slugs for IDs, let's update for consistency. Follows the change in #524 to add suggested id format.

Checklist

• [ ] Added a docs PR that references this PR N/A
• [ ] Added unit/integration tests N/A
• [ ] Added changesets if applicable N/A

Related

n/a

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Latest commit: da5a97b5123876e247496c1916b6b8874dcd3f5c

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