Improve outdated note even more

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/BukkitImplLoader.java

@@ -50,7 +50,7 @@ public class BukkitImplLoader {
         "\n**********************************************\n"
             + "** This FastAsyncWorldEdit version does not fully support your version of Bukkit.\n"
             + "** You can fix this by:\n"
-            +  "** - Updating your server version\n** - Updating FAWE\n"
+            +  "** - Updating your server version (Check /version to see how many versions you are behind)\n** - Updating FAWE\n"
             + "**\n" + "** When working with blocks or undoing, chests will be empty, signs\n"
             + "** will be blank, and so on. There will be no support for entity\n"
             + "** and block property-related functions.\n"