Fix naming for DisableOptimizations vs DxcDisableOptimizations (#245)

Signed-off-by: garrieta <[email protected]>

Materials/DynamicMaterialTest/EmissiveMaterial.shader

@@ -39,7 +39,7 @@
     },
 
     "CompilerHints" : { 
-        "DxcDisableOptimizations" : false
+        "DisableOptimizations" : false
     },
 
     "DrawList" : "forward"