I added this part about npx when I found out that that's how some people run Prettier on CI without installing it as a dependency (no idea why they do that though). Would be good to keep this remark somewhere.

“some people” – who?

Isn’t it better that we promote the “correct way” (adding it to "devDependencies" in package.json)?

Otherwise we’ll have to say something like “if you want to do it the wrong way, here’s a slightly less wrong way to do it”

Makes sense. By "some people" I meant those who complained that Prettier broke their CI when 2.0 was released, but now I haven't been able to find those complaints. Probably it's indeed not that important.

I added the “Note:” part here:

Nicely put. The tabs look good too. Might look even better without the top border.

Removed borders and reduced padding: