message: infra: clarify ecs is in the us-west-1 region
diff: @@ -5,6 +5,10 @@ clusters on our AWS account. This document explains the common maintenance
  procedures one should follow when operating them. Most of the actions explained
  here [require AWS access][aws-access].
  +> **Note:** our ECS cluster is located in the Northern California
  +> (`us-west-1`) AWS region. Make sure it's the selected region when interacting
  +> with the AWS console.
  +
  ## Inspecting the logs
  Logs for applications hosted on ECS are stored in CloudWatch Logs, and can
  