Edits to MacOS section of Kubo cmd line install instructions

[ElPaisano]

Motivation: I was going through IPFS cmd line set up https://curriculum.pl-launchpad.io/curriculum/ipfs/setup/ for Launchpad, which depends on IPFS Docs’ installation instructions. I'm using a Mac with Apple Silicon. I noticed a couple things in the Mac install instructions. They're mostly tiny nitpicks and stylistic preferences but I think we should at least add the stuff about Apple vs Intel.

Proposed Changes:

1. Adds step where the user determines whether they need the binary for an Intel or Apple-based system and removes tip box. This is to help clarify that the user must install the appropriate binary or they will run into issues - it appears that they can't just choose one or the other. I'm using a Mac with Apple silicon and I tried installing the binary for an Intel system just to see what would happen - it doesn't appear to work.
2. Updates outdated command output in the "Unzip the file" step
3. Nit: Breaks out steps into single actions i.e. separates the "change directory" step from the "run the install script" step
4. Nit: Separates command output from the command run.
5. Nits on phrasing and such

Note: If we make the changes suggested in 3 and 4 above, it would probably make sense to standardize the rest of the IPFS docs to match in future PR(s) i.e. all tutorials and processes have the same style.

[ElPaisano]

@TMoMoreau thank you for the review. I addressed most everything, with a few questions in the comment sections.

[ElPaisano]

@TMoMoreau resolved the merge conflict, can you do a sanity check visual read-through review on this one more time? I took a look as well. Should be good to go after that

https://bafybeihd3ljk6z53sbtj74kpxfxatr6rkybk73lzsmfaiqnc3awosk7pmm.on.fleek.co/install/command-line/#macos

[ElPaisano]

Let's squash and merge this one, since it's more than 1 commit

[ElPaisano]

Squashed and merged