Merge pull request circleci#3444 from martinbjeldbak/patch-2

ECS/ECR Deployment documentation: Add missing quote

Author: michelle-luna

jekyll/_cci2/ecs-ecr.md

@@ -106,7 +106,7 @@ workflows:
           aws-region: ${AWS_DEFAULT_REGION}
           family: "${AWS_RESOURCE_NAME_PREFIX}-service"
           cluster-name: "${AWS_RESOURCE_NAME_PREFIX}-cluster"
-          container-image-name-updates: container=${AWS_RESOURCE_NAME_PREFIX}-service,tag=${CIRCLE_SHA1}"
+          container-image-name-updates: "container=${AWS_RESOURCE_NAME_PREFIX}-service,tag=${CIRCLE_SHA1}"
 ```
 
 ### Set Up a Workflow