gobject-introspection: rename package

camelCase package name was a huge inconsistency in GNOME package set.

pkgs/development/libraries/dee/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchurl, python, pkgconfig
-, glib, icu, gobjectIntrospection }:
+, glib, icu, gobject-introspection }:
 
 stdenv.mkDerivation rec {
   name = "dee-${version}";
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
     sha256 = "12mzffk0lyd566y46x57jlvb9af152b4dqpasr40zal4wrn37w0v";
   };
 
-  buildInputs = [ glib gobjectIntrospection icu ];
+  buildInputs = [ glib gobject-introspection icu ];
   nativeBuildInputs = [ python pkgconfig ];
 
   NIX_CFLAGS_COMPILE = [ "-Wno-error=misleading-indentation" ]; # gcc-6