Fix sharding-springboot-demo master slave rule config error (#5864)

* fix orchestration module listens for exeception when have more ruleConfiguration.

* fix springboot with master-slave config

examples/shardingsphere-jdbc-example/sharding-example/sharding-spring-boot-mybatis-example/src/main/resources/application-sharding-master-slave.properties

@@ -52,7 +52,7 @@ spring.shardingsphere.rules.sharding.tables.t_order_item.key-generator.column=or
 spring.shardingsphere.rules.sharding.tables.t_order_item.key-generator.type=SNOWFLAKE
 spring.shardingsphere.rules.sharding.tables.t_order_item.key-generator.props.worker.id=123
 
-spring.shardingsphere.rules.master-slaves.ds_0.master-data-source-name=ds_master_0
-spring.shardingsphere.rules.master-slaves.ds_0.slave-data-source-names=ds_master_0_slave_0, ds_master_0_slave_1
-spring.shardingsphere.rules.master-slaves.ds_1.master-data-source-name=ds_master_1
-spring.shardingsphere.rules.master-slaves.ds_1.slave-data-source-names=ds_master_1_slave_0, ds_master_1_slave_1
+spring.shardingsphere.rules.master-slave.data-sources.ds_0.master-data-source-name=ds_master_0
+spring.shardingsphere.rules.master-slave.data-sources.ds_0.slave-data-source-names=ds_master_0_slave_0, ds_master_0_slave_1
+spring.shardingsphere.rules.master-slave.data-sources.ds_1.master-data-source-name=ds_master_1
+spring.shardingsphere.rules.master-slave.data-sources.ds_1.slave-data-source-names=ds_master_1_slave_0, ds_master_1_slave_1