Update stone to end_stone

Signed-off-by: yoyosource <yoyosource@nidido.de>

BauSystem_Main/src/de/steamwar/bausystem/features/slaves/laufbau/states/CreatingOuterBlocksState.java

@@ -74,7 +74,7 @@ public class CreatingOuterBlocksState implements LaufbauState {
         }
         try {
             editSession.setBlock(BukkitAdapter.asBlockVector(location), SHELL);
-            location.getBlock().setType(Material.STONE, false);
+            location.getBlock().setType(Material.END_STONE, false);
         } catch (MaxChangedBlocksException e) {
             e.printStackTrace();
             // ingored