fix(packages): Update dCompiler reference in default.nix

Author: monyarm

packages/default.nix

@@ -69,7 +69,7 @@
         // optionalAttrs (system == "x86_64-linux") {
           mcl = pkgs.callPackage ./mcl {
             buildDubPackage = inputs'.dlang-nix.legacyPackages.buildDubPackage.override {
-              ldc = inputs'.dlang-nix.packages."ldc-binary-1_34_0";
+              dCompiler = inputs'.dlang-nix.packages."ldc-binary-1_34_0";
             };
             inherit (legacyPackages.inputs.nixpkgs) cachix nix nix-eval-jobs;
           };