How to indent HTML5 with omitted closing tags properly?

Question

I try writing some HTML5 with omitted closing tags in NVIM v0.3.4, and get this:

<ol>
    <li>3
        <li>4
            <li>8
                <li>9
</ol>

This is legit HTML5, and even recommended by some. Is there a way to get this fixed? Specifically, to have the following without manual intervention on the indentation:

<ol>
    <li>3
    <li>4
    <li>8
    <li>9
</ol>