update Changelog for semver

CHANGELOG.en-US.md

@@ -5,7 +5,10 @@ toc: false
 timeline: true
 ---
 
-If you want to read change logs before `2.0.0`, please visit [GitHub](https://github.com/ant-design/ant-design/releases?after=2.0.0).
+
+`antd` strictly follows [Semantic Versioning 2.0.0](http://semver.org/).
+
+If you want to read change logs before `2.0.0`, please visit [GitHub](https://github.com/ant-design/ant-design/blob/1.x-stable/CHANGELOG.md).
 
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CHANGELOG.zh-CN.md

@@ -5,7 +5,9 @@ toc: false
 timeline: true
 ---
 
-如果需要查看 `2.0.0` 之前的更新日志，请移步 [GitHub](https://github.com/ant-design/ant-design/releases?after=2.0.0)。
+`antd` 严格遵循 [Semantic Versioning 2.0.0](http://semver.org/lang/zh-CN/) 语义化版本规范。
+
+如果需要查看 `2.0.0` 之前的更新日志，请移步 [GitHub](https://github.com/ant-design/ant-design/blob/1.x-stable/CHANGELOG.md)。
 
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