chore: add clarifying warning to backup page (immich-app#15000)

* chore: add clarifying warning to backup page

* add extra note

docs/docs/administration/backup-and-restore.md

@@ -5,6 +5,10 @@ import TabItem from '@theme/TabItem';
 
 A [3-2-1 backup strategy](https://www.backblaze.com/blog/the-3-2-1-backup-strategy/) is recommended to protect your data. You should keep copies of your uploaded photos/videos as well as the Immich database for a comprehensive backup solution. This page provides an overview on how to backup the database and the location of user-uploaded pictures and videos. A template bash script that can be run as a cron job is provided [here](/docs/guides/template-backup-script.md)
 
+:::danger
+The instructions on this page show you how to prepare your Immich instance to be backed up, and which files to take a backup of. You still need to take care of using an actual backup tool to make a backup yourself.
+:::
+
 ## Database
 
 :::caution
@@ -21,7 +25,8 @@ It is not recommended to directly backup the `DB_DATA_LOCATION` folder. Doing so
 
 ### Automatic Database Backups
 
-Immich will automatically create database backups by default. The backups are stored in `UPLOAD_LOCATION/backups`.  
+For convenience, Immich will automatically create database backups by default. The backups are stored in `UPLOAD_LOCATION/backups`.  
+As mentioned above, you should make your own backup of these together with the asset folders as noted below.  
 You can adjust the schedule and amount of kept backups in the [admin settings](http://my.immich.app/admin/system-settings?isOpen=backup).  
 By default, Immich will keep the last 14 backups and create a new backup every day at 2:00 AM.