Added comments for GetAttestationOptions for 0.38.x

[NullSoldier]

What changed? Why?

These doc comments were in the latest docs, but this type was copied and didn't have the comment strings. Porting these to the older version of this doc.

Notes to reviewers

How has it been tested?

1. npx mint dev
2. Change version selection to 0.38.x
3. In the navigation bar under Types click on Identity
4. See that GetAttestationOptions is the only type without comments
5. See that comments were back-ported in this commit to 0.38.x from Open http://localhost:3000/onchainkit/latest/utilities/identity/get-attestations

[cb-heimdall]

✅ Heimdall Review Status

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