[VOL-4280] Document kv_store_data_prefix

Change-Id: I12891a41c04649452a1254bf8f8e08c774307501
diff --git a/go.mod b/go.mod
index cc9b221..7c87dcc 100644
--- a/go.mod
+++ b/go.mod
@@ -9,7 +9,7 @@
 	github.com/imdario/mergo v0.3.7 // indirect
 	github.com/jessevdk/go-flags v1.4.0
 	github.com/jhump/protoreflect v1.5.0
-	github.com/opencord/voltha-lib-go/v5 v5.0.5
+	github.com/opencord/voltha-lib-go/v6 v6.0.2
 	github.com/opencord/voltha-protos/v4 v4.2.0
 	github.com/stretchr/testify v1.4.0
 	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45 // indirect