Example code plugin outdated (#8230)

Update example code.
As stated in the migration guide: `All plugin hooks have unified signature with 3 arguments: chart, args and options.`

diff --git a/docs/docs/developers/plugins.md b/docs/docs/developers/plugins.md
index cd3d62386d0edcdc586468a54b18fe50329b09ee..3156ac14cacc7eda06ea1b5f8a2f771d0d1f284a 100644 (file)
--- a/docs/docs/developers/plugins.md
+++ b/docs/docs/developers/plugins.md
@@ -29,7 +29,7 @@ Plugins can also be defined directly in the chart `plugins` config (a.k.a. *inli
 ```javascript
 var chart = new Chart(ctx, {
     plugins: [{
-        beforeInit: function(chart, options) {
+        beforeInit: function(chart, args, options) {
             //..
         }
     }]