Change cite to literal text

[cychitivav]

Add :samp role to improve copy-paste (Before, Sphinx detected the S. for Steven Macenski as a numbered list)

Before:

Now:

[clalancette]

Nice find!

The documentation for :samp: says this:

A piece of literal text, such as code. Within the contents, you can use curly braces to indicate a “variable” part,
as in [file](https://www.sphinx-doc.org/en/master/usage/restructuredtext/roles.html#role-file).
For example, in :samp:`print 1+{variable}`, the part variable would be emphasized: print 1+variable

If you don’t need the “variable part” indication,
use the standard [code](https://www.sphinx-doc.org/en/master/usage/restructuredtext/roles.html#role-code) role instead.

:samp: and :code: seem to generate nearly identical HTML in the end. I'm on the fence about it, since using :code: is kind of weird here. Any thoughts on which way we should go?

[cychitivav]

I explored the Sphinx documentation and couldn't find a dedicated role for citations. However, while reviewing the quote blocks, I stumbled upon a workaround. By using the | symbol, we can preserve line breaks, which would prevent the abbreviation S. from being treated as a numbered list.

Quoted paragraphs (reference) can be created by indenting them more than the surrounding paragraphs.

Line blocks (reference) provide a way to maintain line breaks:

| These lines are
| broken in the same way as they appear
| in the source file.

This approach maintains the indentation that was used in the numbered list to distinguish it from regular text.

Postscript: I have added syntax highlighting for citations in BibTeX.

[clalancette]

I like it! Thanks for iterating there.

I've left one more minor set of changes (to switch to ASCII quotes, which we use almost everywhere else), and then I'm happy with this.

[clalancette]

Thanks, this looks good now. I'll go ahead and merge it.