updates hgroup example

[scottaohara]

per recent changes to hgroup element, reflected in the updated content of the hgroup MDN doc, the try it example needed to be updated as well.

replaced h2 element with p element

[welcome]

💖 Thanks for opening this pull request! 💖
Here is a list of things that will help get it across the finish line:

• If this is a new or updated CSS interactive example, please ensure that you followed the CSS styleguide - If this is a new or updated JavaScript interactive example, please ensure that you followed the JavaScript styleguide - If your changes affects any of the steps in our contribution docs, please also make the relevant changes there.

[jasikpark]

++ for this change, the description below the example describes that a single heading element is permitted, while the current example has two.

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/hgroup#try_it

[jasikpark]

same info here: https://html.spec.whatwg.org/multipage/dom.html#concept-element-content-model

[scottaohara]

@estelle per the updates i made to the hgroup article the other day, this example needed to be updated as well. Is there a separate team that reviews changes to this repo?

[estelle]

@scottaohara The interactive examples are in a separate repo: https://github.com/mdn/interactive-examples.

I am not sure who generally reviewed these. I was added to that repo last week, so have been reviewing a backlog. if you mention me with @estelle, I will see it in my notifications, which I tend to check at least every other day.

[estelle]

thank you

[welcome]

Congrats on merging your first pull request! 🎉🎉🎉

[estelle]

i happen to be in there right now, so I'll make the edit.

[jasikpark]

woot 🥳