Label terminal commands and directory trees in code blocks

content/en/3.serveex/9.apps/1.adguard.md

@@ -40,7 +40,7 @@ This is how ads and malicious domains are blocked—Adguard blocks only the bad
 ## Installation
 Folder structure:
 
-```sh
+```text [Directory tree]
 root
 └── docker
     └── adguard
@@ -145,7 +145,7 @@ Create and open the file `adguard.subdomain.conf`
 You can use [File Browser](/serveex/files/file-browser) to browse and edit files instead of using terminal commands.
 ::
 
-```sh
+```bash [Terminal]
 sudo nano /docker/swag/config/nginx/proxy-confs/adguard.subdomain.conf
 ```