[Fix-5583][sql] fix table name error in sql upgrade script (#5606)

* [DS-5583][fix] fix table ·name error in sql upgrade script

* [DS-5583][fix] fix table ·name error in sql upgrade script
Co-authored-by: Nlihongwei <lihongwei@ebchinatech.com>

sql/upgrade/1.4.0_schema/postgresql/dolphinscheduler_ddl.sql

@@ -276,7 +276,7 @@ BEGIN
           WHERE relname='t_ds_alertgroup'
                             AND indexrelname ='t_ds_alertgroup_name_UN')
       THEN
-         ALTER TABLE t_ds_process_definition ADD CONSTRAINT t_ds_alertgroup_name_UN UNIQUE (group_name);
+         ALTER TABLE t_ds_alertgroup ADD CONSTRAINT t_ds_alertgroup_name_UN UNIQUE (group_name);
        END IF;
 END;
 $$ LANGUAGE plpgsql;
@@ -294,7 +294,7 @@ BEGIN
           WHERE relname='t_ds_datasource'
                             AND indexrelname ='t_ds_datasource_name_UN')
       THEN
-         ALTER TABLE t_ds_process_definition ADD CONSTRAINT t_ds_datasource_name_UN UNIQUE (name, type);
+         ALTER TABLE t_ds_datasource ADD CONSTRAINT t_ds_datasource_name_UN UNIQUE (name, type);
        END IF;
 END;
 $$ LANGUAGE plpgsql;