[웹소켓] 번역 - line274 (#1606)

Author: TGBegins

5-network/11-websocket/article.md

@@ -271,7 +271,7 @@ To get connection state, additionally there's `socket.readyState` property with
 - **`3`** -- "CLOSED": 커넥션이 종료됨
 
 
-## Chat example
+## 채팅 앱 만들기
 
 Let's review a chat example using browser WebSocket API and Node.js WebSocket module <https://github.com/websockets/ws>. We'll pay the main attention to the client side, but the server is also simple.