docs(jokes): minor fixes and improvements

[thomasheyenbrock]

Hello Remix-Team 💿 👋

While going through the jokes-tutorial I noticed some minor errors and changes for tiny improvements, which I bundled up into this PR. I split up the changes into multiple commits, each doing one and only one thing. I tried to be descriptive in the commit messages, and again it's all about minor details. Just leave a comment if some changes or intentions behind them are not clear. 😊

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[remix-cla-bot]

Thank you for signing the Contributor License Agreement. Let's get this merged! 🥳

[zardoy]

Hey, I think it would be also awesome if you also refactor:

1. Use && instead of ? ... : null e.g.

   remix/docs/tutorials/jokes.md

   Lines 1218 to 1220 in 8b3fc2e

   	{process.env.NODE_ENV === "development" ? (
   	<LiveReload />
   	) : null}

   can be shorten by removing : null part and replacing ? with &&

I think it'd much better doing here to avoid potential conflicts as its not merged yet.

2. remix/docs/tutorials/jokes.md

   Line 1809 in 8b3fc2e

   const [randomJoke] = await db.joke.findMany({

   Refactor findMany to findFirst (remove brackets and take: 1). It'd would be extremely useful to know for new users.

[ryanflorence]

Thanks for taking the time to do this but several things were updated in other PRs (like language block highlighting, etc.) creating conflicts.

A brief look at the updates, some look great, others I'd probably pass on, but Kent made the tutorial so I'll let him review.

@kentcdodds you want to take a look at which commits you'd like to take from here and @thomasheyenbrock can push again w/o merge conflicts and just the commits you'd like to keep?

[kentcdodds]

Stellar! Thank you for taking the time to improve things for us. I just made a few of my own tweaks and now we're set. Thank you!