[language-markup] Quotes in HTML attribute values are highlighted

[LeaVerou]

Information:

• Prism version: Latest (reproducible on test.html)
• Plugins: none
• Environment: Browser

Quotes are highlighted as punctuation inside HTML attributes. E.g. this:

<google-chart data='[["Month", "Days"], ["Jan", 31]]'></google-chart>

is highlighted as:

We might decide that this is a feature, not a bug, but figured I'd flag this in case, as it looked wrong to me.

[RunDevelopment]

We might decide that this is a feature, not a bug

Not if I have anything to say in that matter lol

One sec, I'll fix it.