changed domain naming

docs/configuring-playbook-budget-builds.md

@@ -6,7 +6,7 @@ Most cloud providers / ISPs will charge you extra for a static IP address. If yo
 not hosting a highly reliable homeserver you can workaround this via dynamic DNS. To
 set this up, you'll need to get the username/password from your DNS provider. For
 google domains, this process is described [here](https://support.google.com/domains/answer/6147083).
-After you've gotten the proper credentials you can add the following config to your `host-vars`:
+After you've gotten the proper credentials you can add the following config to your inventory/host_vars/matrix.DOMAIN/vars.yml:
 
 ```
 matrix_dynamic_dns_username: XXXXXXXXXXXXXXXX