Added debug code

src/engine/objects/Building.java

@@ -598,7 +598,7 @@ public class Building extends AbstractWorldObject {
         }
 
         if (city.destroyed.get() == true) {
-            Logger.error(city.getName() + "attemp to destroy a destroyed city");
+            Logger.error(city.getName() + "attempt to destroy a destroyed city");
             return;
         }