VOL-2826 Release VOLTHA 2.3 charts

Change-Id: I696ca3cf6fec2baece40b9183afeffa46faf7ea7
diff --git a/voltha-adapter-openolt/values.yaml b/voltha-adapter-openolt/values.yaml
index ce972d3..7dab4bd 100644
--- a/voltha-adapter-openolt/values.yaml
+++ b/voltha-adapter-openolt/values.yaml
@@ -1,3 +1,4 @@
+---
 # Copyright 2019-present Open Networking Foundation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -12,7 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
----
 # Default overrides
 defaults:
   log_level: "WARN"