Callout - Param types

Hugo supports named an unnamed params. Named are more readable. The callout shortcode aims to support both, but not in the same shortcode instance.

The two callouts below using unnamed params

This callout uses the icon check-circle. This should be an sideline callout.
This callout uses the icon check-circle. This should be an inline callout.

The two callouts below using named params

This should work exactly the same as the two callouts above

This callout uses the icon check-circle. This should be an sideline callout.
This callout uses the icon check-circle. This should be an sideline callout.