Found in 2 comments on Hacker News
Developing Quality Technical Information - https://www.amazon.com/Developing-Quality-Technical-Informat...

My review + some notes - https://river.me/blog/book-review-quality-technical-informat... (it's very good)

I always suggest Developing Quality Technical Information, and I'll link to both Amazon [0] and my personal review of it [1]. This is the best book about writing I've ever read, and it's significantly improved my writing in concrete ways. One small example is that I no longer put gerunds (verbs ending in -ing as a noun) in any title or heading, because these don't translate well into other languages in such a context and as such may cause a non-native English speaker to slow down in their reading (or mess up your translator's job if they need to do i18n). But there are much more far-reaching changes; I tend to be a lot more concise, delete adverbs, force myself to use parallel structure, etc. As this blog post's author might put it, I'm a lot more judicious about when and where to employ my voice.

[0] https://www.amazon.com/Developing-Quality-Technical-Informat...

[1] https://river.me/blog/book-review-quality-technical-informat...

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