docs: incorrect Fastify middleware function parameter types

[eltigerchino]

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• Regression
• Bug report
• Feature request
• Documentation issue or request (new chapter/page)
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Current behavior

I'm not sure if the function types are correct for the Fastify middleware example in the docs. It mentions using FastifyRequest['raw'] but that doesn't give me access to the req.originalUrl property (which exists).

Expected behavior

I think it should use the FastifyRequest type which does provide the autocomplete for originalUrl.

[kamilmysliwiec]

Fastify wraps the incoming req and res Node instances using the Request and Reply objects internally, but this is done after the middleware phase.

https://fastify.dev/docs/v3.29.x/Reference/Middleware/