Auto merge of #9128 - poliorcetics:respect-shortness-rustdoc, r=ehuss

Pass the error message format to rustdoc

- Goes with rust-lang/rust#81675.
- Will help with rust-lang/rust#81662.

This is my first PR to Cargo and I haven't finished reading the contributor guide yet, how should I add tests for this ? Did I had the code in the correct place ?

diff --cc src/cargo/core/compiler/context/mod.rs
Simple merge