update changelog

CHANGELOG.en-US.md

@@ -54,7 +54,7 @@ If you want to read change logs before `2.0.0`, please visit [GitHub](https://gi
 - Fix that timers of Spin should be removed correctly. [#6383](https://github.com/ant-design/ant-design/issues/6383)
 - Fix onClick support of Switch. [#6373](https://github.com/ant-design/ant-design/issues/6373)
 - Fix wrong TypeScript definition of Table.Column which will cause `error TS2304: Cannot find name 'T'`. [#6313](https://github.com/ant-design/ant-design/issues/6313)
-- Fix missing TypeScript definition of Timeline.Item. [#6356](https://github.com/ant-design/ant-design/issues/6356)
+- Fix error TypeScript definition of Timeline.Item and Dropdown.Button. [#6356](https://github.com/ant-design/ant-design/issues/6356)
 - Fix broken style of disabled Tree and TreeSelect. [#6320](https://github.com/ant-design/ant-design/issues/6320)
 
 ## 2.10.4

CHANGELOG.zh-CN.md

@@ -54,7 +54,7 @@ timeline: true
 - 修复 Spin 定时器没有被正确移除的问题。[#6383](https://github.com/ant-design/ant-design/issues/6383)
 - 修复 Switch 对 onClick 的支持。[#6373](https://github.com/ant-design/ant-design/issues/6373)
 - 修复 Table.Column TypeScript definition 导致 `error TS2304: Cannot find name 'T'` 的问题。[#6313](https://github.com/ant-design/ant-design/issues/6313)
-- 修复 Timeline.Item TypeScript definition 丢失的问题。[#6356](https://github.com/ant-design/ant-design/issues/6356)
+- 修复 Timeline.Item 和 Dropdown.Button 在 TypeScript 报 `does not have any construct or call signatures` 错中的问题。[#6356](https://github.com/ant-design/ant-design/issues/6356)
 - 修复 Tree、TreeSelect disabled 样式问题。[#6320](https://github.com/ant-design/ant-design/issues/6320)
 
 ## 2.10.4