Update "Dispatching custom events" article

Author: odsantos

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

@@ -8,7 +8,7 @@ We can generate not only completely new events, that we invent for our own purpo
 
 ## Event constructor
 
-Built-in event classes form a hierarchy, similar to DOM element classes. The root is the built-in [Event](http://www.w3.org/TR/dom/#event) class.
+Built-in event classes form a hierarchy, similar to DOM element classes. The root is the built-in [Event](https://dom.spec.whatwg.org/#events) class.
 
 We can create `Event` objects like this:
 
@@ -210,7 +210,7 @@ Please note: the event must have the flag `cancelable: true`, otherwise the call
 
 ## Events-in-events are synchronous
 
-Usually events are processed in a queue. That is: if the browser is processing `onclick` and a new event occurs, e.g. mouse moved, then it's handling is queued up, corresponding `mousemove` handlers will be called after `onclick` processing is finished.
+Usually events are processed in a queue. That is: if the browser is processing `onclick` and a new event occurs, e.g. mouse moved, then its handling is queued up, corresponding `mousemove` handlers will be called after `onclick` processing is finished.
 
 The notable exception is when one event is initiated from within another one, e.g. using `dispatchEvent`. Such events are processed immediately: the new event handlers are called, and then the current event handling is resumed.