Update main.py

main.py

@@ -70,7 +70,7 @@ async def demo():
             <script>
               var source = new EventSource("https://matthoffner-starchat-alpha.hf.space/stream");
               source.onmessage = function(event) {
-                document.getElementById("content").innerHTML += marked.parse(event.data)
+                document.getElementById("content").innerHTML = marked.parse(document.getElementById("content").innerHTML + event.data)
               };
             </script>