update column

doc/db/tables_xxl_job.sql

   `glue_source` text COMMENT 'GLUE源代码',
   `glue_remark` varchar(128) DEFAULT NULL COMMENT 'GLUE备注',
   `glue_updatetime` datetime DEFAULT NULL COMMENT 'GLUE更新时间',
-  `child_jobid` varchar(255) DEFAULT NULL COMMENT '子任务ID，多个逗号分隔',
+  `child_jobkey` varchar(255) DEFAULT NULL COMMENT '子任务ID，多个逗号分隔',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;