some annotation optimizations (#2333)

Co-authored-by: songqh <songquanhe@foxmail.com>

dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/ExecutorService.java

@@ -98,7 +98,7 @@ public class ExecutorService extends BaseService{
                                                    String receivers, String receiversCc, RunMode runMode,
                                                    Priority processInstancePriority, int workerGroupId, Integer timeout) throws ParseException {
         Map<String, Object> result = new HashMap<>(5);
-        // timeout is valid
+        // timeout is invalid
         if (timeout <= 0 || timeout > MAX_TASK_TIMEOUT) {
             putMsg(result,Status.TASK_TIMEOUT_PARAMS_ERROR);
             return result;

dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/enums/ZKNodeType.java

@@ -22,10 +22,10 @@ package org.apache.dolphinscheduler.common.enums;
 public enum ZKNodeType {
 
     /**
-     * 0 do not send warning;
+     * 0 master node;
-     * 1 send if process success;
+     * 1 worker node;
-     * 2 send if process failed;
+     * 2 dead_server node;
-     * 3 send if process ending;
+     * 3 task_queue node;
      */
     MASTER, WORKER, DEAD_SERVER, TASK_QUEUE;
 }