Change path to the derive macro

[nik-rev]

The derive macro will be exported from the crate root once rust-lang/rust#154442 is merged:

std/attr.derive.html:2: broken link - `/checkout/obj/build/reference/attributes/derive.html`
core/attr.derive.html:2: broken link - `/checkout/obj/build/reference/attributes/derive.html`

[ehuss]

I don't believe this is the correct change. The reason the link is failing in rust-lang/rust#154442 is because the documentation that would sit at https://doc.rust-lang.org/nightly/std/attr.derive.html has the documentation at macros/mod.rs. That documentation has a link that is ../../../reference because that documentation was written for when it existed in the prelude docs.

I don't immediately know how to fix that since I'm not sure if the docs will now show up in both places (since it is a re-export). I think the answer is to use #[doc(no_inline)] in v1.rs, but it will take some experimenting to see what works.

[ehuss]

And to clarify, it would be to add no_inline and to also adjust the ../../.. part to use just .. (I think).

[nik-rev]

Thank you @ehuss , that worked!