added a space (alert)

files/core_alerts.yml

@@ -228,7 +228,7 @@ groups:
       summary: "Smart device critical (instance {{ $labels.instance }})"
       description: "Device Critical according to SMART!\n  VALUE = {{ $value }}\n  LABELS: {{ $labels }}"
   - alert: borg_backup_age_warning
-    expr: time() - last_borgbackup > (60*60*28)
+    expr: time() - last_borgbackup > (60*60*28) < (60*60*24*2+1)
     for: 0m
     labels:
       severity: warning