Change default simulation file back to DDR4.

src/simulator/main.cpp

@@ -62,7 +62,7 @@ int sc_main(int argc, char **argv)
         resourceDirectory = argv[2];
     }
 
-    std::filesystem::path baseConfig = resourceDirectory / "ddr5-example.json";
+    std::filesystem::path baseConfig = resourceDirectory / "ddr4-example.json";
     if (argc >= 2)
     {
         baseConfig = argv[1];