chore: fix typo (cloudwego#1439)

Author: GuangmingLuo

content/zh/docs/kitex/Tutorials/basic-feature/protocol/streaming/gRPC/graceful_shutdown.md

@@ -3,7 +3,7 @@ title: "gRPC Streaming 优雅退出"
 date: 2025-01-10
 weight: 4
 keywords: ["优雅退出"]
-description: "本文介绍如何使用 gRPC Streaming 优雅突出"
+description: "本文介绍如何使用 gRPC Streaming 优雅退出"
 ---
 
 ## 背景