Ch.8 Cluster Autoscale Demo 3:58

After I upload yaml files, I entered the following command on cloud shell, but I got error messages.

$ kubectl apply -f autoscale.yml

error: error parsing autoscale.yml: error converting YAML to JSON: yaml: line 106: mapping values are not allowed in this context.

Please kindly let me know how to edit line 106.

Thank you,