The `doc(cfg(target_os = "cygwin"))` annotation is rendered poorly

[Darksonn]

The following code:

// src/lib.rs
#![feature(doc_cfg)]

#[doc(cfg(any(target_os = "linux", target_os = "cygwin")))]
pub fn my_function() {}

is rendered by rustdoc like this:

I expected the cygwin requirement to be rendered along the lines of "Available on Cygwin only", but it is displayed as target_os="cygwin" instead which stands out unnecessarily.

I included a Linux requirement in the example for comparison. The issue happens without the any(target_os = "linux", _) part.

Version

$ rustdoc +nightly --version
rustdoc 1.90.0-nightly (ba7e63b63 2025-07-29)

[Darksonn]

cc @Berrysoft

[Berrysoft]

I think we might need to fix rustdoc for that...?

[Noratrieb]

Yes:

rust/src/librustdoc/clean/cfg.rs

Line 483 in 32e7a4b

let human_readable = match (name, value) {