fix: Chinese translations

[david4958606]

Fix Chinese translation of Payee form "付款人" to "收款人".

Fix #1835

[delphij]

I am a native speaker of Chinese and the proposed change looks fine to me.

[yagebu]

Thanks :) As described in https://github.com/beancount/fava/blob/main/CONTRIBUTING.md, the translations are done at poeditor.com - I'll copy-paste those two changes there, if you want to make further improvements, please sign up there :)

[yagebu]

This fix is in #1856