Switch editing instructions from vim to nano and use kbd for keys

content/en/3.serveex/8.development/1.code-server.md

@@ -162,10 +162,10 @@ Inside the Swag config folders, create the file `code.subdomain.conf`.
 ::
 
 ```sh
-sudo vi /docker/swag/config/nginx/proxy-confs/code.subdomain.conf
+sudo nano /docker/swag/config/nginx/proxy-confs/code.subdomain.conf
 ```
 
-Enter insert mode with `i` and paste the following configuration:
+Paste the following configuration:
 
 ```nginx
 ## Version 2023/12/19
@@ -217,7 +217,7 @@ server {
 }
 ```
 
-Press `Esc`, then save and exit by typing `:x` and pressing `Enter`.
+Press :kbd{value="Ctrl+O"}, then :kbd{value="Enter"} to save, and :kbd{value="Ctrl+X"} to exit.
 
 That’s it — code-server is now exposed!