pkgs/tools: pkgconfig -> pkg-config

pkgs/tools/archivers/snzip/default.nix

@@ -1,6 +1,6 @@
 { lib, stdenv, fetchFromGitHub
 , autoreconfHook
-, pkgconfig
+, pkg-config
 , snappy
 }:
 
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ snappy ];
   # We don't use a release tarball so we don't have a `./configure` script to
   # run. That's why we generate it.
-  nativeBuildInputs = [ autoreconfHook pkgconfig ];
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
 
   meta = with lib; {
     description = "A compression/decompression tool based on snappy";