docs: fix typo

- domains are registered with Ionos automatically when present in `config.yml`

README.md

@@ -3,6 +3,12 @@
 A simple script used to send dynamic DNS updates to the Ionos API.
 Using this script requires you to have your domain registered with Ionos, and having obtained an [API key from them](https://developer.hosting.ionos.com/docs/getstarted).
 
+Any subdomains you add to `config.yml` are added automatically to your Ionos account and pointed at your public IP (provided that your API Key is valid and you own the respective parent domain).
+
+**NOTE:** Removing the domains from `config.yml` does not remove their global DNS record.
+They will still be publically registered subdomains and point to whatever public IP you had when you last ran the script with the respective domain listed inside `config.yml`.
+You must log in to your Ionos account and remove them manually to de-register the domain.
+
 ### Dependencies
 
 Python 3.6 or above.
@@ -37,10 +43,6 @@ domains:
   - subdomain2.example.com
 ```
 
-**NOTE:** Make sure you have manually added each subdomain you are listing in your Ionos account.
-The script currently does not handle adding subdomains for you.
-Attempting to update the DNS entry for an unregistered domain will cause the API call to fail.
-
 You may optionally set a descriptive string which is sent along with the update:
 ```yaml
 description: "Dynamic DNS update."