fix url

Author: YaoyaoChang

index.html

@@ -118,7 +118,7 @@ <h1 style="font-size: 2.3em;">VibeVoice: A Frontier Open-Source Text-to-Speech M
         <span class="sep">·</span>
         <a href="https://huggingface.co/collections/microsoft/vibevoice-68a2ef24a875c44be47b034f" target="_blank">🤗 Hugging Face</a>
         <span class="sep">·</span>
-        <a href="https://aka.ms/VibeVoiceDemo" target="_blank">
+        <a href="https://aka.ms/VibeVoice-Demo" target="_blank">
           <img src="assets/image/microphone.svg" alt="Demo" width="16" height="16" style="vertical-align:text-bottom;"> Demo
         </a>
       </p>