Add link to library for macos in README

[ghost]

No description provided.

[Bromeon]

Thanks! Just a small remark.

[Bromeon]

What changed here? 🙂

[ghost]

The addition of a new line, I think. I edited it within github so it's probably the github editor formatting the text.

[Bromeon]

Since macOS + ARM is quite common setup (M1), would it make sense to add another config for that as well?

See https://docs.godotengine.org/en/latest/tutorials/export/feature_tags.html#default-features

[ghost]

Yes the apple silicon computers are arm64.

[Bromeon]

My point is, does the macos.64 work for those, or do we need macos.arm64?
In my link it says:

Running on a 64-bit build (any architecture)

so in theory it should be enough to have .64. So maybe let's leave this PR as-is.

[ghost]

I agree. I use an x86 macbook so i cannot confirm for certainty, but macos.64 should work for arm64 too. At least that's what the documentation suggests.