[DOC]: Code blocks in libcu++ docs are hard to read

[Nyrio]

Is this a duplicate?

• I confirmed there appear to be no duplicate issues for this bug and that I agree to the Code of Conduct

Is this for new documentation, or an update to existing docs?

Update

Describe the incorrect/future/missing documentation

Currently, code blocks have a background color for the block but also one for the text. I find that this makes them hard to read.

My suggestion is to remove the text background color and make the block background color darker.

Before:

After:

In the CSS, one could remove:

div.highlighter-rouge, pre.highlight code {
  background-color: #111 !important;
}

And update:

.highlighter-rouge div.highlight
{ background: #1a1a1a; }

.highlighter-rouge div.highlight pre
{ background: #1a1a1a; }

edit: the rule needs to be more specific than defaults to override them

Example: https://nvidia.github.io/cccl/libcudacxx/ptx.html#stasync

[miscco]

That looks indeed much better. Could you provide a PR for that?