add this._super call to included hook plugin doc

fivetanley · web-flow · commit 85072ea9e1a3 · 2021-09-13T10:08:30.000-07:00
Not calling `this._super` in the `included` hook causes other build issues (at least when developing an addon) and seems to be the recommended practice in the docs as well: https://cli.emberjs.com/release/writing-addons/in-repo-addons/#broccolibuildoptionsforinrepoaddons
diff --git a/README.md b/README.md
@@ -86,6 +86,8 @@ module.exports = {
       name: 'some-transform',
       plugin: SomeTransform
     });
+    
+    this._super.included.apply(this, arguments);
   }
 };
 ```

Original file line number	Diff line number	Diff line change
`@@ -86,6 +86,8 @@ module.exports = {`
`86`	`86`	`name: 'some-transform',`
`87`	`87`	`plugin: SomeTransform`
`88`	`88`	`});`
	`89`	`+`
	`90`	`+ this._super.included.apply(this, arguments);`
`89`	`91`	`}`
`90`	`92`	`};`
`91`	`93`	```