Update techniques/html/H73.html

Author: patrickhlauke

techniques/html/H73.html

@@ -27,7 +27,7 @@
                is null. The purpose of a layout table is simply to control the placement of content;
                the table itself is “transparent" to the user. A <code>summary</code> would “break" this
                transparency by calling attention to the table. A null <code>summary</code>
-                 (<code>summary</code>="") on layout tables is acceptable. See <a href="https://www.w3.org/WAI/WCAG21/Techniques/failures/F46">F46</a> for details.</p>
+                 (<code>summary=""</code>) on layout tables is acceptable. See <a href="https://www.w3.org/WAI/WCAG21/Techniques/failures/F46">F46</a> for details.</p>
       </div>
    </section><section id="examples"><h2>Examples</h2>
       <section class="example">