Merge pull request #2560 from li-xiao-shuang/feature_nacos_examples

[ISSUE #2550] Update nacos example image

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

@@ -113,7 +113,7 @@
 #### 验证自动注入
 在浏览器地址栏输入 `http://127.0.0.1:18084/nacos/bean`，并点击调转，可以看到成功从 Nacos Config Server 中获取了数据。
 
-![get](https://tva1.sinaimg.cn/large/e6c9d24ely1h29htdsg18j20jc0aigma.jpg)
+![get](https://tva1.sinaimg.cn/large/e6c9d24ely1h2gbowleyrj20o40bo753.jpg)
 
 #### 验证动态刷新
 1. 执行如下命令，修改 Nacos Server 端的配置数据
@@ -122,7 +122,7 @@
 
 2. 在浏览器地址栏输入 `http://127.0.0.1:18084/nacos/bean`，并点击调转，可以看到应用从 Nacos Server 中获取了最新的数据，group 变成了 DEFAULT_GROUP。
 
-![refresh](https://tva1.sinaimg.cn/large/e6c9d24ely1h29hzf0ic4j20ks0b4mxy.jpg)
+![refresh](https://tva1.sinaimg.cn/large/e6c9d24ely1h2gbpram9rj20nq0ccmxz.jpg)
 
 
 ## 原理

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

@@ -116,7 +116,7 @@ Before we start the demo, let's learn how to connect Nacos Config to a Spring Cl
 #### Automatic Injection
 Enter `http://127.0.0.1:18084/nacos/bean` in the browser address bar and click Go to, we can see the data successfully obtained from Nacos Config Server.
 
-![get](https://tva1.sinaimg.cn/large/e6c9d24ely1h29htdsg18j20jc0aigma.jpg)
+![get](https://tva1.sinaimg.cn/large/e6c9d24ely1h2gbowleyrj20o40bo753.jpg)
 
 #### Dynamic Refresh
 1. Run the following command to modify the configuration data on the Nacos Server side.
@@ -125,7 +125,7 @@ Enter `http://127.0.0.1:18084/nacos/bean` in the browser address bar and click G
 
 2. Enter `http://127.0.0.1:18084/nacos/bean` in the address bar of the browser, and click Flip, you can see that the application has obtained the latest data from Nacos Server, and the group has become DEFAULT_GROUP.
 
-![refresh](https://tva1.sinaimg.cn/large/e6c9d24ely1h29hzf0ic4j20ks0b4mxy.jpg)
+![refresh](https://tva1.sinaimg.cn/large/e6c9d24ely1h2gbpram9rj20nq0ccmxz.jpg)
 
 
 ## Principle