Update '12/index.html'

12/index.html

@@ -286,7 +286,7 @@
                 }
             });
 
-            document.querySelector("audio_05 #TOC_icon").addEventListener("click",function(){
+            document.querySelector(".audio_05 #TOC_icon").addEventListener("click",function(){
               document.querySelector("#implicancies_05 #week_05").classList.toggle("hidden");
             });