Fix typo in metadata/service/client.yml

Change-Id: I068e0f74bea0e74ad18026fa7721119a93c915ee
diff --git a/metadata/service/client.yml b/metadata/service/client.yml
index 3527091..701dc35 100644
--- a/metadata/service/client.yml
+++ b/metadata/service/client.yml
@@ -1,5 +1,5 @@
 applications:
-- elasticsearch.client
+- elasticsearch
 parameters:
   elasticsearch:
     client: