Auto merge of #1254 - gnzlbg:dox_cleanup, r=gnzlbg

CONTRIBUTING.md

Cargo.toml

README.md

ci/dox.sh

ci/landing-page-footer.html

ci/landing-page-head.html

src/cloudabi/mod.rs

src/dox.rs

src/fuchsia/mod.rs

src/lib.rs

src/macros.rs

src/redox/mod.rs

src/unix/bsd/apple/mod.rs

src/unix/bsd/freebsdlike/dragonfly/mod.rs

src/unix/bsd/freebsdlike/freebsd/aarch64.rs

src/unix/bsd/freebsdlike/freebsd/arm.rs

src/unix/bsd/freebsdlike/freebsd/mod.rs

src/unix/bsd/freebsdlike/freebsd/powerpc64.rs

src/unix/bsd/freebsdlike/freebsd/x86.rs

src/unix/bsd/freebsdlike/freebsd/x86_64.rs