Fix typo in MessageConfiguration.java

plugin/src/main/java/com/alttd/cometskyblock/configuration/MessageConfiguration.java

@@ -26,7 +26,7 @@ public class MessageConfiguration implements Configuration {
         CobbeGen cobbeGen = new CobbeGen();
         @ConfigSerializable @Getter
         public static class CobbeGen {
-            String requiredLevel = "You must reach <islandlevel> before upgrading to the next cobblestone generation level.";
+            String requiredLevel = "You must reach islandlevel <islandlevel> before upgrading to the next cobblestone generation level.";
             String upgraded = "Your cobblestone generation is now level <level>.";
         }