doc_comment::doctest!() is never called

[0ndorio]

It seems that the test feature requirement for the doctest!() macro currently disables the validation of the tests cases inside the README.md file.

https://github.com/Geal/nom/blob/f40e4a74bd25abea2d2de306476c143dd0e9a181/src/lib.rs#L425-L426

I assume that the reason here is rustdoc not using the test flag (rust-lang/rust#61199). So this will not work until rust-lang/rust#61351 and rust-lang/rust#62213 are merged and we change the l.425 into #[cfg(doctest)].

[Geal]

thanks for the report, I moved to cfg(doctest) in d4d79d0