fix: templating error on volsync prom rules

bootstrap/templates/kubernetes/apps/volsync/volsync/app/prometheusrule.yaml.j2

@@ -10,18 +10,14 @@ spec:
         - alert: VolSyncComponentAbsent
           annotations:
             summary: VolSync component has disappeared from Prometheus target discovery.
-          expr: |
+          expr: absent(up{job="volsync-metrics"})
-            absent(up{job="volsync-metrics"})
           for: 15m
           labels:
             severity: critical
         - alert: VolSyncVolumeOutOfSync
           annotations:
-            summary: >-
+            summary: "{% raw %}{{ $labels.obj_namespace }}/{{ $labels.obj_name }} volume is out of sync.{% endraw %}"
-              {{ $labels.obj_namespace }}/{{ $labels.obj_name }} volume
+          expr: volsync_volume_out_of_sync == 1
-              is out of sync.
-          expr: |
-            volsync_volume_out_of_sync == 1
           for: 15m
           labels:
             severity: critical