docs: nginx config for backend

Author: liuxy0551

docs/docsify/zh-cn/guide/代理服务.md

@@ -82,7 +82,14 @@ proxy_set_header   X-Real-IP  $remote_addr; # 获取客户端真实ip
 
 # 标签引擎代理
 location /api/v1  {
-   proxy_pass http://doraemon/proxy/49; # doraemon
+    proxy_max_temp_file_size         0k;
+    fastcgi_buffers 32 8k;
+    proxy_http_version 1.1;
+    proxy_set_header X-Real-IP       $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header Host            $host;
+    #proxy_pass http://real-tag;
+    proxy_pass http://172.16.100.225:7001/proxy/298/api/v1;
 }
 ```