(master): Fix doc error

Author: Joe Crick

index.html

@@ -531,7 +531,7 @@ <h2 class="content-subhead">Modal</h2>
         &lt;div class=<span style="color: #a31515">&quot;modal-header&quot;</span>&gt;
             Header
             &lt;input type=<span style="color: #a31515">&quot;radio&quot;</span> id=<span style="color: #a31515">&quot;close-modal&quot;</span> name=<span
-                            style="color: #a31515">&quot;close-modal modal-toggle&quot;</span> class=<span style="color: #a31515">&quot;pcssc-invisible&quot;</span>/&gt;
+                            style="color: #a31515">&quot;modal-toggle&quot;</span> class=<span style="color: #a31515">&quot;pcssc-invisible&quot;</span>/&gt;
             &lt;label <span style="color: #0000ff">for</span>=<span
                             style="color: #a31515">&quot;close-modal&quot;</span> class=<span style="color: #a31515">&quot;close-button&quot;</span>&gt;x&lt;/label&gt;
         &lt;/div&gt;