Update codebox (#9430)

* updated the codeboxes in docs

* codebox change from json to http

docs/sources/administration/cli.md

@@ -41,7 +41,7 @@ then there are two flags that can be used to set homepath and the config file pa
 
 If you have not lost the admin password then it is better to set in the Grafana UI. If you need to set the password in a script then the [Grafana API](http://docs.grafana.org/http_api/user/#change-password) can be used. Here is an example with curl using basic auth:
 
-```
+```bash
 curl -X PUT -H "Content-Type: application/json" -d '{
   "oldPassword": "admin",
   "newPassword": "newpass",