Fix two (old) bugs in the HTML, doesn't appear to have had an effect

on the rendering, but nevertheless
 - Legacy-Id: 4001

Author: OleLaursen

ietf/templates/meeting/agenda.html

@@ -224,8 +224,8 @@ <h1>IETF {{ meeting.num }} Meeting Agenda</h1>
 You can customize the agenda below to show only selected working group sessions.  To be able to return to the customized view later, bookmark the resulting URL:
 <div class="noprint" onclick="toggle_wg_selector()">
    <img id="wg-selector-triangle-right" src="/images/triangle-right.png" />
-   <img id="wg-selector-triangle-down" src="/images/triangle-down.png"/ class="hidden" >
-   <span id="wg-selector-toggle-text">Select working group sessions</style>
+   <img id="wg-selector-triangle-down" src="/images/triangle-down.png" class="hidden" />
+   <span id="wg-selector-toggle-text">Select working group sessions</span>
 </div>
 <table id="wg-selector" width="100%" class="hidden">
   <tr>