Update values.yaml of exampleservice chart

Change-Id: I682f315210f09f43800a54d5d218b91fa603f5df
diff --git a/xos-services/exampleservice/templates/deployment.yaml b/xos-services/exampleservice/templates/deployment.yaml
index 8e5dbc9..14f0c22 100644
--- a/xos-services/exampleservice/templates/deployment.yaml
+++ b/xos-services/exampleservice/templates/deployment.yaml
@@ -52,7 +52,7 @@
           configMap:
             name: exampleservice
             items:
-              - key: service-config
+              - key: serviceConfig
                 path: exampleservice_config.yaml
         - name: cert-chain-secret
           secret: