chore: update notification template

templates/telegram.tmpl

@@ -1,6 +1,8 @@
-✅  Database Backup Notification – {{.Database}}
-Hi,
-Backup of the {{.Database}} database has been successfully completed on {{.EndTime}}.
+✅ Database Backup Successful
+
+Dear Team,
+The backup process for the {{.Database}} database was successfully completed.
+Please find the details below:
 
 Backup Details:
 - Database Name: {{.Database}}
@@ -10,3 +12,5 @@ Backup Details:
 - Backup Location: {{.BackupLocation}}
 - Backup Size: {{.BackupSize}} bytes
 - Backup Reference: {{.BackupReference}}
+
+You can access the backup at the specified location if needed.