rustdoc book: talk about #![doc(test(no_crate_inject))] and #![doc(test(attr(...)))] #45767
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While investigating #45750 i noticed that
#![doc(test(attr(...)))]
wasn't documented at all. Since this is useful for making your examples follow the same coding guidelines as your code, i wanted to add it to the Rustdoc Book. I also added#![doc(test(no_crate_inject))]
since it's used in the same place and might be useful for macro-heavy crates. I added mentions for these to "Thedoc
attribute" as well as "Documentation tests" since it's useful information in both places.Technically the step reordering in the second commit is gated on #45764, since before that lands attributes from the doctest come before the ones from
#![doc(test(attr(...)))]
.