Add link to chartjs-plugin-waterfall (#4921)

diff --git a/docs/notes/extensions.md b/docs/notes/extensions.md
index 33e0e647e59a80a78df5f9f46db936949c985a5c..5831821eff265b86970f4848d6526ae171ae1dfb 100644 (file)
--- a/docs/notes/extensions.md
+++ b/docs/notes/extensions.md
@@ -18,6 +18,7 @@ In addition, many charts can be found on the [npm registry](https://www.npmjs.co
  - <a href="https://github.com/chartjs/chartjs-plugin-deferred" target="_blank">chartjs-plugin-deferred</a> - Defers initial chart update until chart scrolls into viewport.
  - <a href="https://github.com/compwright/chartjs-plugin-draggable" target="_blank">chartjs-plugin-draggable</a> - Makes select chart elements draggable with the mouse.
  - <a href="https://github.com/y-takey/chartjs-plugin-stacked100" target="_blank">chartjs-plugin-stacked100</a> - Draws 100% stacked bar chart.
+  - <a href="https://github.com/everestate/chartjs-plugin-waterfall" target="_blank">chartjs-plugin-waterfall</a> - Enables easy use of waterfall charts.
  - <a href="https://github.com/chartjs/chartjs-plugin-zoom" target="_blank">chartjs-plugin-zoom</a> - Enables zooming and panning on charts.
 
 In addition, many plugins can be found on the [npm registry](https://www.npmjs.com/search?q=chartjs-plugin-).