improve changelog format

CHANGELOG.en-US.md

@@ -302,16 +302,16 @@ If you want to read change logs before `2.0.0`, please visit [GitHub](https://gi
 `2017-03-11`
 
 - New [design specification documentation](https://ant.design/docs/spec/colors).
-- Fix error of Modal.confirm [#5269](https://github.com/ant-design/ant-design/issues/5269).
-- Fix mask style of Upload [#5275](https://github.com/ant-design/ant-design/issues/5275).
-- Fix progress not showing of Upload [#5323](https://github.com/ant-design/ant-design/issues/5323).
-- Fix a pagination showTotal wrong data issue of Table [#5259](https://github.com/ant-design/ant-design/issues/5259).
-- Fix a style issue while using Popconfirm and Button together [5301](https://github.com/ant-design/ant-design/issues/5301).
-- Fix a style issue of Radio [#5336](https://github.com/ant-design/ant-design/pull/5336).
-- Fix a issue that `getContainer` of Message didn't work [#5380](https://github.com/ant-design/ant-design/issues/5380).
-- Fix text alignment of Checkbox and Radio [696a3c0](https://github.com/ant-design/ant-design/commit/696a3c0e34156d78e87d629a3f0f8703af1f03ec).
-- Tweak animation and blur style of Spin [fa1e031](https://github.com/ant-design/ant-design/commit/fa1e031a7396c61fa9709a0c46fe63200c35d232).
-- Tweak some styles of Mention  [240a93c](https://github.com/ant-design/ant-design/commit/240a93cee25bc8c6ad4520cd907a14a7b22ed773).
+- Fix error of Modal.confirm. [#5269](https://github.com/ant-design/ant-design/issues/5269)
+- Fix mask style of Upload. [#5275](https://github.com/ant-design/ant-design/issues/5275)
+- Fix progress not showing of Upload. [#5323](https://github.com/ant-design/ant-design/issues/5323)
+- Fix a pagination showTotal wrong data issue of Table. [#5259](https://github.com/ant-design/ant-design/issues/5259)
+- Fix a style issue while using Popconfirm and Button together. [#5301](https://github.com/ant-design/ant-design/issues/5301)
+- Fix a style issue of Radio. [#5336](https://github.com/ant-design/ant-design/pull/5336)
+- Fix a issue that `getContainer` of Message didn't work. [#5380](https://github.com/ant-design/ant-design/issues/5380)
+- Fix text alignment of Checkbox and Radio.  [696a3c0](https://github.com/ant-design/ant-design/commit/696a3c0e34156d78e87d629a3f0f8703af1f03ec)
+- Tweak animation and blur style of Spin.  [fa1e031](https://github.com/ant-design/ant-design/commit/fa1e031a7396c61fa9709a0c46fe63200c35d232)
+- Tweak some styles of Mention.  [240a93c](https://github.com/ant-design/ant-design/commit/240a93cee25bc8c6ad4520cd907a14a7b22ed773)
 
 ## 2.8.1
 

CHANGELOG.zh-CN.md

@@ -297,16 +297,16 @@ timeline: true
 `2017-03-19`
 
 - 发布了新的 [设计基础文档](https://ant.design/docs/spec/colors-cn)。
-- 修复使用 Modal.confirm 时报错的问题。[#5269](https://github.com/ant-design/ant-design/issues/5269)。
-- 修复 Upload 的蒙层样式 [#5275](https://github.com/ant-design/ant-design/issues/5275)。
-- 修复 Upload 上传进度条不显示的问题 [#5323](https://github.com/ant-design/ant-design/issues/5323)。
-- 修复 Table 的分页的 showTotal 数据错误的问题 [#5259](https://github.com/ant-design/ant-design/issues/5259)。
-- 修复了 Popconfirm 与 Button 同时使用时的样式问题 [5301](https://github.com/ant-design/ant-design/issues/5301)。
-- 修复 Radio 的一个样式问题 [#5336](https://github.com/ant-design/ant-design/pull/5336)。
-- 修复 Message 的 getContainer 无法使用的问题 [#5380](https://github.com/ant-design/ant-design/issues/5380)。
-- 修复 Checkbox 和 Radio 标签的文字对齐 [696a3c0](https://github.com/ant-design/ant-design/commit/696a3c0e34156d78e87d629a3f0f8703af1f03ec)。
-- 调整了 Spin 的动画 [fa1e031](https://github.com/ant-design/ant-design/commit/fa1e031a7396c61fa9709a0c46fe63200c35d232)。
-- 调整了 Mention 的一些样式 [240a93c](https://github.com/ant-design/ant-design/commit/240a93cee25bc8c6ad4520cd907a14a7b22ed773)。
+- 修复使用 Modal.confirm 时报错的问题。[#5269](https://github.com/ant-design/ant-design/issues/5269)
+- 修复 Upload 的蒙层样式。[#5275](https://github.com/ant-design/ant-design/issues/5275)
+- 修复 Upload 上传进度条不显示的问题。[#5323](https://github.com/ant-design/ant-design/issues/5323)
+- 修复 Table 的分页的 showTotal 数据错误的问题。[#5259](https://github.com/ant-design/ant-design/issues/5259)
+- 修复了 Popconfirm 与 Button 同时使用时的样式问题。[#5301](https://github.com/ant-design/ant-design/issues/5301)
+- 修复 Radio 的一个样式问题。[#5336](https://github.com/ant-design/ant-design/pull/5336)
+- 修复 Message 的 getContainer 无法使用的问题。[#5380](https://github.com/ant-design/ant-design/issues/5380)
+- 修复 Checkbox 和 Radio 标签的文字对齐。 [696a3c0](https://github.com/ant-design/ant-design/commit/696a3c0e34156d78e87d629a3f0f8703af1f03ec)
+- 调整了 Spin 的动画。[fa1e031](https://github.com/ant-design/ant-design/commit/fa1e031a7396c61fa9709a0c46fe63200c35d232)
+- 调整了 Mention 的一些样式。[240a93c](https://github.com/ant-design/ant-design/commit/240a93cee25bc8c6ad4520cd907a14a7b22ed773)
 
 ## 2.8.1