tweak docs so backup script overwrites existing name
@@ -4,7 +4,7 @@ A backup script is provided for quick and easy way to backup all settings into o
Download the backup script:
```bash
-wget https://raw.githubusercontent.com/wh1te909/tacticalrmm/master/backup.sh
+wget -N https://raw.githubusercontent.com/wh1te909/tacticalrmm/master/backup.sh
```
From the Web UI, click **Tools > Server Maintenance**
