docs: Add dollar sign to indicate that it is a shell script

[Yaminyam]

Overview of Changes

For document unity, a dollar sign was added to indicate that it is a shell script.

[andrew-aiken]

Thanks for working on the document unity. Personally I think that its better to not have the dollar sign in front of them since it causes issues when copy/pasting.

[Yaminyam]

@andrew-aiken Your opinion makes a lot of sense too! So, would it be better to unify it by removing existing dollar signs?

[andrew-aiken]

That would make sense (at least for code blocks)

@jdearmas whats your opinion on this?

[TeneBrae93]

Hey @Yaminyam -- sorry for the late response on this. I agree with @andrew-aiken. I think it's better to not have the dollar sign due to copy/pasting issues (I've ran into that myself on other projects). It would be good to remove the dollar sign for consistency.