open_api formatter doesn't populate info node correctly #464

From the documentation seems to be a correct way to set API name and API description using following params on config:

# Change the name of the API on index pages
  config.api_name = "API Documentation"
 # Change the description of the API on index pages
  config.api_explanation = "API Description"

This approach works well when exporting documentation in :html format, but when exporting to :open_API nothing happens and the info node seems to ignore configurations and set default values. (See attached screenshot)

I added an open_api.yml under config folder, but still nothing.

Is there another way to correctly populate open_api.json?