update sample html to use wss in case of https

whisperlivekit/web/live_transcription.html

@@ -321,7 +321,7 @@
 
         const host = window.location.hostname || "localhost";
         const port = window.location.port || "8000";
-        const defaultWebSocketUrl = `ws://${host}:${port}/asr`;
+        const defaultWebSocketUrl = `${window.location.protocol === "https:" ? "wss" : "ws"}://${host}:${port}/asr`;
         websocketInput.value = defaultWebSocketUrl;
         websocketUrl = defaultWebSocketUrl;