Update events.md

fix: Oops, the event object in $emit needs its event prototype of course, so no spreading notation is possible.

Author: BarnabasSzabolcs

Diff for: src/v2/guide/events.md

@@ -181,7 +181,7 @@ To address this problem, Vue provides **event modifiers** for `v-on`. Recall tha
 Please note that with the exception of `.once` the modifiers above only work with **native events**.
 
 <p class="tip">
-When emitting native-looking events from components, such as 'click', it is a good practice to also emit the native event. eg. `this.$emit('click', {...data, ...event})`. If you haven't read about components yet, don't worry about this for now.
+When emitting native-looking events from components, such as 'click', it is a good practice to also emit the native event. eg. `event.data = {...}; this.$emit('click', event)`. If you haven't read about components yet, don't worry about this for now.
 </p>
 
 <!-- the click event's propagation will be stopped -->