Custom link field does not get outputted as HTML via API output
**Steps to reproduce**
1. Create a dataprocessor and add a custom link field
2. Set API output
3. Use API explorer to view the result (came across the issue when using [Content Views CiviCRM](https://github.com/agileware/content-views-civicrm-data-processor/) )
**Actual Result**
As seen from the screen shot, the field only outputs the link text
issue