HtmlAttachment.update(1935679, content_id: "7154da1b-8cc2-4ccc-a375-a314e2ef4e8c")

Reset the content id for an HtmlAttachment...
Reset the content id for an HtmlAttachment...

This HtmlAttachment has a different content_id in the Publishing API
there's only one Edition of the attachable relation so it's safe enough
to correct the content_id without polluting the document history.
