[Docs Site] resolve bad import in D1 tutorial

[Cherry]

Summary

Fixes the following warning when building the docs:

src/content/docs/d1/tutorials/import-to-d1-with-rest-api/index.mdx (55:16): "Detail" is not exported by "src/components/index.ts", imported by "src/content/docs/d1/tutorials/import-to-d1-with-rest-api/index.mdx".

This isn't ever used, so can just be removed from the import in this file.

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