Link in Treemap page drives to Area Chart

[mjhendrickson]

The link in the treemap page (https://www.r-graph-gallery.com/treemap.html) linking to data-to-viz.com directs users to area charts (https://www.data-to-viz.com/graph/area.html) not the treemap page (https://www.data-to-viz.com/graph/treemap.html).

Fix: Change data-to-viz.com link in the opening paragraph from: https://www.data-to-viz.com/graph/area.html to: https://www.data-to-viz.com/graph/treemap.html

(btw - fantastic resource!)