site: improve changelog style

CHANGELOG.en-US.md

@@ -23,10 +23,10 @@ Learn more in the [Ant Design 3.0 announcement post](https://medium.com/ant-desi
 
 ### Major Changes
 
-- New [color system](https://ant.design/docs/spec/colors#Color-Palettes), We changed our primary color from 『`#108EE9`』 to 『`#1890FF`』, we called the new primary color "拂晓蓝(Daybreak blue)" which means the color of the sky at daybreak.
+- New [color system](https://ant.design/docs/spec/colors#Color-Palettes), We changed our primary color from 『`#108EE9`』 to 『`#1890FF`』, we called the new primary color "拂晓蓝 (Daybreak Blue)" which means the color of the sky at daybreak.
 - New design of components.
 - Increased the base font size from 12px to 14px.
-- Changed default locale to en_US.
+- Changed default locale to `en_US`.
 - Support React 16.
 - Better TypeScript support.
 - New [List](https://ant.design/components/list/) component.

CHANGELOG.zh-CN.md

@@ -23,7 +23,7 @@ timeline: true
 
 ### 主要变化
 
-- 全新的[色彩系统](https://ant.design/docs/spec/colors-cn#Color-Palettes), 组件主色由 『`#108EE9`』 改为 『`#1890FF`』，新主色我们称之为“拂晓蓝”。
+- 全新的[色彩系统](https://ant.design/docs/spec/colors-cn#Color-Palettes)，组件主色由 『`#108EE9`』 改为 『`#1890FF`』，新主色我们称之为『拂晓蓝』。
 - 全新的视觉样式和组件尺寸，更现代更美观。
 - 基础字体大小由 `12px` 增大到 `14px`。
 - 默认语言由中文改为英文。

site/theme/static/markdown.less

@@ -106,7 +106,7 @@
   background: #f2f4f5;
   margin: 0;
   padding: 0;
-  font-size: @font-size-base;
+  font-size: @font-size-base - 1px;
   color: @site-text-color;
   overflow: auto;
 }
@@ -303,6 +303,7 @@
 
 // For Changelog
 .markdown ul.ant-timeline {
+  line-height: 2;
   li.ant-timeline-item {
     list-style: none;
     margin: 0;