treewide/xorg: replace *proto with xorgproto

pkgs/misc/screensavers/slock/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchurl, writeText
-, xproto, libX11, libXext, libXrandr
+, xorgproto, libX11, libXext, libXrandr
 # default header can be obtained from
 # https://git.suckless.org/slock/tree/config.def.h
 , conf ? null }:
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
     sha256 = "0sif752303dg33f14k6pgwq2jp1hjyhqv6x4sy3sj281qvdljf5m";
   };
 
-  buildInputs = [ xproto libX11 libXext libXrandr ];
+  buildInputs = [ xorgproto libX11 libXext libXrandr ];
 
   installFlags = "DESTDIR=\${out} PREFIX=";