[docs] remove details tags from integration READMEs

[sarah11918]

Changes

Replaces the <details></details> pattern (which previously hid installation and configuration instructions, and some examples) in the integration package READMEs with appropriate level headings.

Testing

Not tested.

Docs

Content auto-generated for Docs.

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Latest commit: 999f724

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[natemoo-re]

This makes a ton of sense!