expandIconPosition 设置图标位置 start | end错误

[55Kevin]

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• [ ] I have searched the issues of this repository and believe that this is not a duplicate.

Version

4.2.5

Environment

4.2.5

Reproduction link

https://www.antdv.com/components/collapse-cn/#api

Steps to reproduce

expandIconPosition 设置图标位置 start | end错误

What is expected?

正确的应该是left|right

What is actually happening?

文档写的是start | end