Fix typo in 2.2.5 (Dispatching custom events)

Author: vsemozhetbyt

2-ui/2-events/05-dispatch-events/article.md

@@ -266,7 +266,7 @@ Then we can either put the `dispatchEvent` (or another event-triggering call) at
 </script>
 ```
 
-Now `dispatchEvent` runs asynchronously after the current code execution is finished, including `mouse.onclick`, so event handlers are totally separate.
+Now `dispatchEvent` runs asynchronously after the current code execution is finished, including `menu.onclick`, so event handlers are totally separate.
 
 The output order becomes: 1 -> 2 -> nested.