content: change homepage h2 -> h1
Accessibility guidelines require that an h2 must be inside an h1.
Fixes b/144351322.
</div>
<div class="Homepage">
<div class="Homepage-packages">
- <h2>Popular Packages</h2>
+ <h1>Popular Packages</h2>
<ul>
<li><a href="/github.com/sirupsen/logrus">github.com/sirupsen/logrus</a></li>
<li><a href="/github.com/gin-gonic/gin">github.com/gin-gonic/gin</a></li>
</ul>
</div>
<div class="Homepage-packages">
- <h2>Featured Packages</h2>
+ <h1>Featured Packages</h2>
<ul>
<li><a href="/database/sql">database/sql</a></li>
<li><a href="/google.golang.org/grpc">google.golang.org/grpc</a></li>
