Enable Dark Mode for NodeJS docs

[AjayPoshak]

Is your feature request related to a problem? Please describe.
Please enable dark mode for node docs like the nodejs.dev website.

[AjayPoshak]

I would like to work on it, if that's possible.

[DerekNonGeneric]

@AjayPoshak, that is possible.

[dougmellon]

@AjayPoshak If you would like help, let me know and I will lend a hand.

Also, I suggest a good first issue tag for this issue.

[dougmellon]

@AjayPoshak if you are not going to take this, I'll jump on it. Just let me know.

[DerekNonGeneric]

@dougmellon, if you two would be interested in collaborating, that would be cool. @AjayPoshak hasn't expressed interest yet, so it's still up for grabs. May the best solution land. :)

[dougmellon]

Sounds good!

[AjayPoshak]

@DerekNonGeneric @dougmellon I will be working on it this weekend.

[dougmellon]

@DerekNonGeneric @dougmellon I will be working on it this weekend.

Awesome. Do you mind if I help out?

[AjayPoshak]

@dougmellon not at all. Let's work on it together.

[DerekNonGeneric]

Just wanted to mention to the person who makes the PR with the commit: you can add the “Co-authored-by” trailer to the end of the commit message with the other person's name and preferred email to preserve attribution.

Refs: https://github.blog/2018-01-29-commit-together-with-co-authors/#how-it-works

[AjayPoshak]

@dougmellon Please dm me on twitter, I could not find your contact info on profile.