Fixed doc start 3 dashes in berlin-community-pod-1-multi-olt-DT and dt-berlin-pod-gpon-DT yaml files

Change-Id: Ia184724452bd0b46c28812267af828e49795f56c
diff --git a/deployment-configs/berlin-community-pod-1-multi-olt-DT.yaml b/deployment-configs/berlin-community-pod-1-multi-olt-DT.yaml
index 726392e..3d47420 100644
--- a/deployment-configs/berlin-community-pod-1-multi-olt-DT.yaml
+++ b/deployment-configs/berlin-community-pod-1-multi-olt-DT.yaml
@@ -1,4 +1,4 @@
-  ---
+---
 
   # Copyright 2020-present Open Networking Foundation
   #