Fix docs on nightly
Fix docs on nightly

cactorium/libc,mneumann/libc,cactorium/libc,rust-lang/libc,rust-lang/libc,cactorium/libc,rust-lang-nursery/libc,mneumann/libc,rust-lang/libc,rust-lang-nursery/libc,rust-lang-nursery/libc,mneumann/libc