Update to V2.

Author: sdk-team

ChangeLog.txt

@@ -1,3 +1,6 @@
+2022-12-05 Version: v2.0.0
+- Update to V2.
+
 2022-06-30 Version: v1.0.2
 - Add Policy APIs.
 

README-CN.md

@@ -10,7 +10,7 @@
 ## 安装
 你可以使用 `go mod` 来管理你的依赖，
 ```sh
-  go get github.com/alibabacloud-go/tag-20180828
+  go get github.com/alibabacloud-go/tag-20180828/v2
 ```
 
 ## 问题

README.md

@@ -10,7 +10,7 @@ English | [简体中文](README-CN.md)
 If you use `go mod` to manage your dependence, you can use the following command:
 
 ```sh
-$ go get github.com/alibabacloud-go/tag-20180828
+$ go get github.com/alibabacloud-go/tag-20180828/v2
 ```
 
 ## Issues