Hotfix plain linkages

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

BauSystem_Linkage/src/de/steamwar/bausystem/linkage/LinkageType.java

@@ -25,7 +25,7 @@ public enum LinkageType {
     COMMAND("$.setMessage(de.steamwar.bausystem.BauSystem.MESSAGE)", "de.steamwar.command.SWCommand"),
     ENABLE_LINK("$.enable()", null, "de.steamwar.bausystem.linkage.Enable"),
     DISABLE_LINK("$.disable()", null, "de.steamwar.bausystem.linkage.Disable"),
-    PLAIN(),
+    PLAIN("$", null),
     LISTENER(), // Is handled internally from LinkageProcessor
     UNLINK_LISTENER("org.bukkit.event.HandlerList.unregisterAll($)", null, "org.bukkit.event.Listener"),