Update CHANGELOG

Author: mbostock

CHANGELOG.md

@@ -34,7 +34,7 @@ Plot.plot({
 })
 ```
 
-The new [Delaunay and Voronoi marks](./README.md#delaunay) produce Delaunay triangulations and Voronoi tesselations. Plot.delaunayLink, Plot.delaunayMesh, Plot.hull, Plot.voronoi, and Plot.voronoiMesh.
+The new [Delaunay and Voronoi marks](./README.md#delaunay) produce Delaunay triangulations and Voronoi tesselations: [Plot.delaunayLink](./README.md#plotdelaunaylinkdata-options) draws links for each edge of the Delaunay triangulation of the given points, [Plot.delaunayMesh](./README.md#plotdelaunaymeshdata-options) draws a mesh of the Delaunay triangulation  of the given points, [Plot.hull](./README.md#plothulldata-options) draws a convex hull around the given points, [Plot.voronoi](./README.md#plotvoronoidata-options) draws polygons for each cell of the Voronoi tesselation of the given points, and [Plot.voronoiMesh](./README.md#plotvoronoimeshdata-options) draws a mesh for the cell boundaries of the Voronoi tesselation of the given points.
 
 [<img src="./img/voronoi.png" width="640" height="396" alt="a Voronoi diagram of penguin culmens, showing the length and depth of several species">](https://observablehq.com/@observablehq/plot-delaunay)