convert docker-compose.yaml to dockerhub

[monkeypants]

replace "docker.wso2.dom" with "wso2" for image sources
in the "editor-worker-dashboard/docker-compose.yaml"

Fixes #73
(problems caused by 401 error on the docker.wso2.com web site)

[CLAassistant]

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[monkeypants]

reading what you are asking me to sign is a significantly larger task than fixing the bug.