It was the only h3 in <code>, and it lacked <p> around its content.
It looked like it was part of the prior section:
https://tip.golang.org/doc/go1.17#gofmt
Change-Id: I7e9ef70e9a03474225833f44420aabd70dab3cd5
Reviewed-on: https://go-review.googlesource.com/c/go/+/326774
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Trust: Brad Fitzpatrick <bradfitz@golang.org>
<a href="https://golang.org/design/draft-gobuild">https://golang.org/design/draft-gobuild</a>.
</p>
-<h3 id="gofmt"><code>gofmt</code></h3>
+<h3 id="gofmt">Gofmt</h3>
+
+<p>
<code>gofmt</code> (and <code>go</code> <code>fmt</code>) now synchronizes
<code>//go:build</code> lines with <code>// +build</code> lines. If a file
only has <code>// +build</code> lines, they will be moved to the appropriate
added. Otherwise, <code>// +build</code> lines will be overwritten based on
any existing <code>//go:build</code> lines. For more information, see
<a href="https://golang.org/design/draft-gobuild">https://golang.org/design/draft-gobuild</a>.
-</h3>
+</p>
<h3 id="vet">Vet</h3>