def render(context)
      site = context.registers[:site]
      converter = site.getConverterImpl(::Jekyll::Converters::Markdown)
      converter.convert(render_block(context))
    end
def render(context)
      site = context.registers[:site]
      converter = site.getConverterImpl(::Jekyll::Converters::Markdown)
      converter.convert(render_block(context))
    end
Uses the default Jekyll markdown parser to
 parse the contents of this block