Fix build error

linkis-dist/package/db/linkis_ddl.sql

@@ -37,7 +37,7 @@ CREATE TABLE `linkis_ps_configuration_config_key`(
     `default_value`    varchar(200) DEFAULT NULL COMMENT 'Adopted when user does not set key',
     `validate_type`    varchar(50)  DEFAULT NULL COMMENT 'Validate type, one of the following: None, NumInterval, FloatInterval, Include, Regex, OPF, Custom Rules',
     `validate_range`   varchar(150)  DEFAULT NULL COMMENT 'Validate range',
-    `engine_conn_type` varchar(50)  DEFAULT '' COMMENT 'engine type,such as spark,hive etc'
+    `engine_conn_type` varchar(50)  DEFAULT '' COMMENT 'engine type,such as spark,hive etc',
     `is_hidden`        tinyint(1)   DEFAULT NULL COMMENT 'Whether it is hidden from user. If set to 1(true), then user cannot modify, however, it could still be used in back-end',
     `is_advanced`      tinyint(1)   DEFAULT NULL COMMENT 'Whether it is an advanced parameter. If set to 1(true), parameters would be displayed only when user choose to do so',
     `level`            tinyint(1)   DEFAULT NULL COMMENT 'Basis for displaying sorting in the front-end. Higher the level is, higher the rank the parameter gets',