[docs] reorder items for configuration reference page (#9815)

* docs-config-ref-order

* Update packages/astro/src/@types/astro.ts

Co-authored-by: Reuben Tier <[email protected]>

* Update packages/astro/src/@types/astro.ts

Co-authored-by: Reuben Tier <[email protected]>

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Co-authored-by: Nate Moore <[email protected]>
Co-authored-by: Reuben Tier <[email protected]>