types

Author: birkskyum

docs/types.md

@@ -142,8 +142,8 @@ The `projectionTransition` is used to configure which projection to use for the
 
 There are currently two projections implemented.
 
-- `mercator` - Web Mercator projection.
-- `stereographic` - Stereographic projection.
+- `mercator` - [Web Mercator projection](https://en.wikipedia.org/wiki/Web_Mercator_projection)
+- `stereographic` - [Stereographic projection](https://en.wikipedia.org/wiki/Stereographic_projection)
 
 And the following [presets](#use-a-projection-preset)