Merge pull request #255 from KamToHung/master

fix word

Author: KamToHung

common/src/main/java/org/dromara/dynamictp/common/em/NotifyItemEnum.java

@@ -17,8 +17,8 @@ public enum NotifyItemEnum {
     CHANGE("change"),
 
     /**
-     * ThreadPool livenes notify.
-     * livenes = activeCount / maximumPoolSize
+     * ThreadPool liveness notify.
+     * liveness = activeCount / maximumPoolSize
      */
     LIVENESS("liveness"),