fix missing dereference (#4217)

fix missing dereference

fixes dereference in master statefulset
missed one, sorry
@chrislusf 

I'm working on a helm chart publish action for you that will catch these with helm lint and publish the chart to github pages.

k8s/helm_charts2/templates/master-statefulset.yaml

@@ -134,7 +134,7 @@ spec:
               -garbageThreshold={{ .Values.master.garbageThreshold }} \
               {{- end }}
               -ip=${POD_NAME}.${SEAWEEDFS_FULLNAME}-master.{{ .Release.Namespace }} \
-              -peers={{ range $index := until (.Values.master.replicas | int) }}${SEAWEEDFS_FULLNAME}-master-{{ $index }}.${SEAWEEDFS_FULLNAME}-master.{{ .Release.Namespace }}:{{ $.Values.master.port }}{{ if lt $index (sub ($.Values.master.replicas | int) 1) }},{{ end }}{{ end }}
+              -peers={{ range $index := until (.Values.master.replicas | int) }}${SEAWEEDFS_FULLNAME}-master-{{ $index }}.${SEAWEEDFS_FULLNAME}-master.{{ $.Release.Namespace }}:{{ $.Values.master.port }}{{ if lt $index (sub ($.Values.master.replicas | int) 1) }},{{ end }}{{ end }}
           volumeMounts:
             - name : data-{{ .Release.Namespace }}
               mountPath: /data