fix typo

hifiscp/templates/cerebrum_deployment.yaml

@@ -25,7 +25,7 @@ spec:
         prometheus.io/scrape: "true"
         prometheus.io/path: /actuator/prometheus
         prometheus.io/scheme: http
-        prometheus.io/port: {{ .Values.webapp.service.targetPort | quote }}
+        prometheus.io/port: {{ .Values.cerebrum.service.targetPort | quote }}
       {{- end }}
       labels:
         app: {{ template "hifiscp.name" . }}-cerebrum