Update test.html

Co-authored-by: Scott O'Hara <scottaohara@users.noreply.github.com>

test.html

@@ -1606,7 +1606,7 @@ <h1 id="title" class="title">HTML Accessibility API Mappings 1.0</h1>
  <th>
  <a data-type="element" href="https://html.spec.whatwg.org/multipage/embedded-content.html#the-img-element"><code>img</code></a>
  <span class="el-context">(<a href="https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-alt"><code>alt</code></a>
- attribute value is the empty string, i.e. <code>alt=""</code> or <code>alt</code> with no value in the markup)</span>
+ attribute value is the empty string, i.e., <code>alt=""</code> or <code>alt</code> with no value in the markup)</span>
  </th>
  <td class="aria">
  <div class="role">