add an empty line

Author: sanposhiho

cloudbuild.yaml

@@ -20,4 +20,4 @@ options:
 # this will push these images, or cause the build to fail if they weren't built.
 images:
   - 'gcr.io/$PROJECT_ID/scheduler:$_GIT_TAG'
-  - 'gcr.io/$PROJECT_ID/scheduler:latest'
+  - 'gcr.io/$PROJECT_ID/scheduler:latest'