add missing a to link tags (#4493)

closes #4492

Co-authored-by: Mike Gower <[email protected]>

Author: fstrr

techniques/html/H97.html

@@ -58,9 +58,9 @@ <h3>Multiple <code class="language-html">nav</code> elements and <code class="la
          <p>The following example shows a best practice of how landmarks might be added to an HTML document in situations where there are two or more of the same type of landmark on the same page, and there is no existing text on the page that can be referenced as the label:</p>
 <pre xml:space="preserve"><code class="language-html">&lt;nav aria-label="Site"&gt;
   &lt;ul&gt;
-    &lt;li&gt;&lt; href="..."&gt;nav link 1&lt;/a&gt;&lt;/li&gt;
-    &lt;li&gt;&lt; href="..."&gt;nav link 2&lt;/a&gt;&lt;/li&gt;
-    &lt;li&gt;&lt; href="..."&gt;nav link 3&lt;/a&gt;&lt;/li&gt;
+    &lt;li&gt;&lt;a href="..."&gt;nav link 1&lt;/a&gt;&lt;/li&gt;
+    &lt;li&gt;&lt;a href="..."&gt;nav link 2&lt;/a&gt;&lt;/li&gt;
+    &lt;li&gt;&lt;a href="..."&gt;nav link 3&lt;/a&gt;&lt;/li&gt;
   &lt;/ul&gt;
 &lt;/nav&gt;
 &lt;nav aria-label="Tags"&gt;
@@ -105,4 +105,4 @@ <h2>Resources</h2>
       </ul>
    </section>
 </body>
-</html>
+</html>