[w3c/uievents] Specberus errors happen during spec-prod (#314)

```
  Specberus Errors:
    Wrong syntax for Latest Version link.
      {
        name: 'headers.dl',
        section: 'front-matter',
        rule: 'docIDLatestVersion'
      }
    Missing `data-editor-id` attribute for editor(s): Gary Kacmarcik (Google)
         , Travis Leithead (Microsoft)
         .
      { name: 'headers.dl', section: 'front-matter', rule: 'editorSection' }
  
  Details: https://labs.w3.org/echidna/api/status?id=e97e416c-5226-491e-839f-c0611d543098

  💥 Echidna publish has failed.
```

@marcoscaceres wanna take a look? 

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