Fix schedule final disclaimer

Author: qPalee

index.html

@@ -92,7 +92,7 @@ <h3 class="header">{{ day.day }}</h3>
       </div>
       {% endfor %}
     </div>
-    {% unless page.schedule-final %}
+    {% unless page.schedule.final %}
     <p class="disclaimer">* This schedule is not final; it is subject to change.</p>
     {% endunless %}
   </div>