Update app.py

app.py

@@ -87,8 +87,8 @@ download_audio_js = """
     let root = document.querySelector("body > gradio-app");
     if (root.shadowRoot != null)
         root = root.shadowRoot;
-    let audio = root.querySelector("#tts-audio-{audio_id}").querySelector("audio");
-    let text = root.querySelector("#input-text-{audio_id}").querySelector("textarea");
+    let audio = root.querySelector("#tts-audio").querySelector("audio");
+    let text = root.querySelector("#input-text").querySelector("textarea");
     if (audio == undefined)
         return;
     text = text.value;