Update public/index.html

public/index.html

@@ -71,7 +71,7 @@
         // Listen for chat messages
         socket.on('chat message', function(data) {
             const item = document.createElement('li');
-            item.innerText = `${data.username}: ${data.message}`;
+            item.innerHTML = `${data.username}: ${data.message}`;
             messages.appendChild(item);
             window.scrollTo(0, document.body.scrollHeight);
             twemoji.parse(document.body);