Fix 2x AA option not set correctly

COM3D2.ToukaScreenShot.Plugin/ToukaScreenShot.cs

@@ -130,7 +130,7 @@ namespace CM3D2.ToukaScreenShot.Plugin
             var aa = GameMain.Instance.CMSystem.Antialias switch
             {
                 CMSystem.AntiAliasType.None => 0,
-                CMSystem.AntiAliasType.X2 => 1,
+                CMSystem.AntiAliasType.X2 => 2,
                 CMSystem.AntiAliasType.X4 => 4,
                 CMSystem.AntiAliasType.X8 => 8,
                 _ => 8,