Invalid w3c.json data

[dontcallmedom-bot]

The w3c.json file in this repo does not follow the expected data model. The following errors were detected:

• [ ] invalid contacts: [{"github":"michael-n-cooper","w3c":"cooper"},{"github":"svgeesus","w3c":"clilley"}]

_{This issue was detected and reported semi-automatically by validate-repos.}