docs：polished the readme docs

Fix `nacos` password spelling error

spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme-zh.md

@@ -46,7 +46,7 @@
 
 3. 在命令行执行如下命令，向 Nacos Server 中添加一条配置。
 	
-		curl -X POST "http://127.0.0.1:8848/nacos/v1/cs/configs?dataId=nacos-config-example.properties&group=DEFAULT_GROUP&content=spring.cloud.nacos.config.serveraddr=127.0.0.1:8848%0Aspring.cloud.nacos.config.prefix=PREFIX%0Aspring.cloud.nacos.config.group=GROUP%0Aspring.cloud.nacos.config.namespace=NAMESPACE"
+		curl -X POST "http://127.0.0.1:8848/nacos/v1/cs/configs?dataId=nacos-config-example.properties&group=DEFAULT_GROUP&content=spring.cloud.nacos.config.serverAddr=127.0.0.1:8848%0Aspring.cloud.nacos.config.prefix=PREFIX%0Aspring.cloud.nacos.config.group=GROUP%0Aspring.cloud.nacos.config.namespace=NAMESPACE"
 		
 	**注：你也可以使用其他方式添加，遵循 HTTP API 规范即可，若您使用的 Nacos 版本自带控制台，建议直接使用控制台进行配置**
 	

spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme.md

@@ -46,7 +46,7 @@ Before we start the demo, let's learn how to connect Nacos Config to a Spring Cl
 
 3. Execute the following command to add a configuration to Nacos Server.
 
-   	curl -X POST "http://127.0.0.1:8848/nacos/v1/cs/configs?dataId=nacos-config-example.properties&group=DEFAULT_GROUP&content=spring.cloud.nacos.config.serveraddr=127.0.0.1:8848%0Aspring.cloud.nacos.config.prefix=PREFIX%0Aspring.cloud.nacos.config.group=GROUP%0Aspring.cloud.nacos.config.namespace=NAMESPACE"
+   	curl -X POST "http://127.0.0.1:8848/nacos/v1/cs/configs?dataId=nacos-config-example.properties&group=DEFAULT_GROUP&content=spring.cloud.nacos.config.serverAddr=127.0.0.1:8848%0Aspring.cloud.nacos.config.prefix=PREFIX%0Aspring.cloud.nacos.config.group=GROUP%0Aspring.cloud.nacos.config.namespace=NAMESPACE"
 		
 	**Note: You can also add it in other ways. If you are using the Nacos version with its own console, it is recommended to configure it directly using the console.**