quiz sentence hide details and stop audio before starting next

docs/.vitepress/theme/components/TTS.vue

@@ -30,6 +30,10 @@ async function playAudio() {
   const voices = await getVoices(lang);
   if (!voices.length) return;
 
+  document.querySelectorAll("audio").forEach((el) => {
+    el.pause();
+  });
+
   const v = voices[Math.floor(Math.random() * voices.length)];
   console.log(JSON.stringify(v));
   await speak({