fix: fix wrong func result order in readme

[dword-design]

No description provided.

[sindresorhus]

The existing code is correct.

[dword-design]

@sindresorhus Ummh are you sure? I mean how can it be that below we have the reverse order?

const newObject = mapObject({FOO: true, bAr: {bAz: true}}, (key, value) => [key.toLowerCase(), value]);

Also, [key, value] is the order of Object.entries. I just added it to a lib with tests running on it and [key, value] is the order. I cannot say more. Maybe I'm missing something.

[sindresorhus]

The example is showing that you can invert key and value. I have already clarified this in the readme now.

[dword-design]

Ah my bad. Thx. Swapping keys and values is a weird, probably non-existing (first-mentioned) use case ^^.