diff --git a/docs/document/level-2/nginx_or_haproxy_tls_tunnel.md b/docs/document/level-2/nginx_or_haproxy_tls_tunnel.md
index dc5d8ca..3f07918 100644
--- a/docs/document/level-2/nginx_or_haproxy_tls_tunnel.md
+++ b/docs/document/level-2/nginx_or_haproxy_tls_tunnel.md
@@ -1,5 +1,5 @@
 ---
-title: Nginx或Haproxy搭建TLS隧道隐藏指纹
+title: Nginx 或 Haproxy 搭建 TLS 隧道隐藏指纹
 ---
 
 Nginx 或 Haproxy 实现的 HTTPS 隧道、HTTP/2 over HTTPS 隧道、WebSocket over HTTP/2 over HTTPS 隧道、gRPC over HTTP/2 over HTTPS 隧道以及自签证书双端认证的 gRPC over HTTP/2 over HTTPS 隧道