fix(ddx): add detailed connection information for dedibackup

Author: bene2k1

dedibox/dedicated-servers/how-to/use-dedibackup-ftp-backup.mdx

@@ -48,12 +48,22 @@ You can access your backup space after its activation using the FTP protocol.
 
 ### FTP parameters
 
-| Name of the server | dedibackup.online.net                  |
+| Name of the server | dedibackup-dcX.online.net              |
 |--------------------|----------------------------------------|
 | Port               | 21                                     |
 | Login              | sd-serverid (ex. sd-1234)              |
 | Password           | the password you set during activation |
 
+<Message type="note">
+Replace `dcX` in the Dedibackup hostname with the location of your Dedibackup account.
+
+You can find the hostname for your Dedibackup space in the **Backup** section of the server's console.
+
+Available locations are:
+- `dedibackup-dc2.online.net`
+- `dedibackup-dc3.online.net`
+</Message>
+
 You are not limited in number of simultaneous connections. The use of FTPFS is not allowed.
 
 <Message type="important">