stupid typo

homelab/k3s/pihole/pihole.yaml

@@ -56,7 +56,7 @@ spec:
             - name: "pihole-custom-list"
               mountPath: "/etc/pihole/custom.list"
               subPath: "custom.list"
-          volume:
+          volumes:
             - name: "pihole-custom-list"
               configMap:
                 name: "pihole-custom-list"