Applied kotlin style conventions

src/main/kotlin/net/axay/kspigot/extensions/events/PrepareItemCraftEventExtensions.kt

@@ -10,10 +10,12 @@ import org.bukkit.inventory.ItemStack
  * the result is equal to [Material.AIR].
  */
 val PrepareItemCraftEvent.isCancelled: Boolean
-        get() = this.inventory.result?.type == Material.AIR
+    get() = this.inventory.result?.type == Material.AIR
 
 /**
  * "Cancels" this event by
  * setting the result to [Material.AIR].
  */
-fun PrepareItemCraftEvent.cancel() { this.inventory.result = ItemStack(Material.AIR) }
+fun PrepareItemCraftEvent.cancel() {
+    this.inventory.result = ItemStack(Material.AIR)
+}