chore: improve features/backup.mdx

apps/docs/content/features/backup.mdx

@@ -6,6 +6,26 @@ Zerops provides data backup for certain services.
 
 Whether a service supports backups is specified on the documentation page of each service. Technical details about backup implementation for each service are also described on their respective service pages.
 
+## Supported Services and Formats
+
+Zerops supports backups for these services with the following formats:
+
+- **MariaDB**: `.xb.zip` (using mariabackup with xbstream format)
+- **PostgreSQL**: `.dump` (using pg_dump with custom format)
+- **Qdrant**: `snapshot`
+- **NATS**: `.tar.gz`
+- **Elasticsearch**: `.gz`
+- **Meilisearch**: `.dump`
+- **Shared Storage**: `.tar.gz`
+
+## Backup File Naming
+
+Backup files follow a consistent naming convention:
+`backup-{serviceName}-{dateTime}.{extension}`
+
+For example:
+`backup-db-2024-11-04-120007.dump`
+
 ## Frequency and volume
 
 By default, your data is backed up automatically **every day** between 00:00:00 UTC and 01:00:00 UTC, unless you update your settings:
@@ -21,6 +41,16 @@ Following changes are available in Zerops GUI. Go to the service detail and choo
 - download a backup
 - delete a backup
 
+### Using CLI
+
+You can also manage backups programmatically using the Zerops CLI:
+
+```bash
+zcli backup serviceName
+```
+
+This command triggers a backup for the specified service and waits until the backup is either completed or fails.
+
 ### Limits
 
 - Each backup is stored for a maximum period of **1 month**