conversions were done using https://github.com/pennae/nix-doc-munge
using (probably) rev f34e145 running
nix-doc-munge nixos/**/*.nix
nix-doc-munge --import nixos/**/*.nix
the tool ensures that only changes that could affect the generated
manual *but don't* are committed, other changes require manual review
and are discarded.
* nghttpx: Add a new NixOS module for the nghttpx proxy server
This change also adds a global `uid` and `gid` for a `nghttpx` user
and group as well as an integration test.
* nixos/nghttpx: fix building manual
