Update gnb_user_manual_cn.md

Author: gnbdev

docs/gnb_user_manual_cn.md

@@ -529,7 +529,7 @@ es-argv --upnp
 1001|10.1.0.1|255.255.255.0
 1002|10.1.0.2|255.255.255.0
 1003|10.1.0.3|255.255.255.0
-1003|192.168.1.0|255.255.255.0
+1002|192.168.0.0|255.255.255.0
 ```
 
 `conf/1003/address.conf`