<hgroup> example doesn't seem idiomatic

[danburzo]

The example for the <hgroup> page does not seem idiomatic:

<hgroup>
    <h1>Calculus I</h1>
    <p>Fundamentals</p>
</hgroup>
<p>This course will start with a brief introduction about the limit of a function. Then we will describe how the idea of derivative emerges in the Physics and Geometry fields. After that, we will explain that the key to master calculus is …</p>

Here, it looks like Fundamentals should really be a <h2>, as it delineates the introduction. If indeed Fundamentals is a tagline for Calculus I, I suggest a less ambiguous example. The styling on Fundamentals (Drop cap) likewise doesn't help discern its semantics.

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