default config files properly separated

readme.md

@@ -77,11 +77,12 @@ ListenStream=[::]:8000
 
 [Install]
 WantedBy=sockets.target
-
+```
    - modify nginx configuration
 
-# /etc/nginx/nginx.conf
+### /etc/nginx/nginx.conf
 
+```
 user www-data;
 worker_processes auto;
 pid /run/nginx.pid;