[웹소켓] 번역, line71(#883)

Author: Eunjnnn

5-network/11-websocket/article.md

@@ -68,7 +68,7 @@ That's actually it, we can talk WebSocket already. Quite simple, isn't it?
 
 그렇긴 하지만 실무 수준에서 웹소켓을 활용할 수 있도록 웹소켓에 대해 좀 더 자세하게 알아봅시다.
 
-## Opening a websocket
+## 웹소켓 열기
 
 When `new WebSocket(url)` is created, it starts connecting immediately.