Missing letter (#1081)

* Missing letter

* Update separate to different for clarification

src/v2/guide/components.md

@@ -483,7 +483,7 @@ Every Vue instance implements an [events interface](../api/#Instance-Methods-Eve
 - Listen to an event using `$on(eventName)`
 - Trigger an event using `$emit(eventName)`
 
-<p class="tip">Note that Vue's event system is separate from the browser's [EventTarget API](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget). Though they work similarly, `$on` and `$emit` are __not__ aliases for `addEventListener` and `dispatchEvent`.</p>
+<p class="tip">Note that Vue's event system is different from the browser's [EventTarget API](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget). Though they work similarly, `$on` and `$emit` are __not__ aliases for `addEventListener` and `dispatchEvent`.</p>
 
 In addition, a parent component can listen to the events emitted from a child component using `v-on` directly in the template where the child component is used.