Fix unclear snippets for Highlight addon docs

[kylegach]

Related discussion: #23951 (comment)

https://storybook.js.org/docs/react/essentials/highlight

Clarify where emit comes from.

[ATREAY]

Hey @kylegach, can I work on this issue?
Also, if you assign me this task, I've got a quick question: where should I put the info about that "emit()" function?

[ATREAY]

Hey @kylegach,

I would like to inquire about the status of this issue. Is this issue still open?

[jonniebigodes]

@ATREAY thanks for your interest in helping us improve our documentation. We appreciate it 🙏 ! If you're still interested, please go ahead and submit a contribution.

If you have questions about contributing, check out our documentation or ask us here so that we're able to help you get unblocked.

Looking forward to seeing the pull request up.

Hope you have a fantastic rest of the weekend.

Stay safe

[ATREAY]

Hey @jonniebigodes, I've made the necessary changes. Please take a look when you get a chance!

[ATREAY]

Hey @jonniebigodes, could you take a look at the changes I've made?
Thanks!