fix for json syntax error

This syntax error is breaking puppet in my setup.
---
err: /File[/var/lib/puppet/lib]: Failed to generate additional resources using 'eval_generate: Error 400 on SERVER: expected next element in array at '
    },
    {
      '!
err: /File[/var/lib/puppet/lib]: Could not evaluate: Error 400 on SERVER: expected next element in array at '
    },
    {
      '! Could not retrieve file metadata for puppet://foo.acme.org/plugins: Error 400 on SERVER: expected next element in array at '
    },
    {
      '!