Update on.md (#2780)

"attrbtes" updated to "attributes"

packages/docs/src/en/directives/on.md

@@ -13,7 +13,7 @@ Here's an example of simple button that shows an alert when clicked.
 <button x-on:click="alert('Hello World!')">Say Hi</button>
 ```
 
-> `x-on` can only listen for events with lower case names, as HTML attribtes are case-insensitive. Writing `x-on:CLICK` will listen for an event named `click`. If you need to listen for a custom event with a camelCase name, you can use the [`.camel` helper](#camel) to work around this limitation. Alternatively, you can use  [`x-bind`](/directives/bind.md#bind-directives) to attach an `x-on` directive to an element in javascript code (where case will be preserved).
+> `x-on` can only listen for events with lower case names, as HTML attributes are case-insensitive. Writing `x-on:CLICK` will listen for an event named `click`. If you need to listen for a custom event with a camelCase name, you can use the [`.camel` helper](#camel) to work around this limitation. Alternatively, you can use  [`x-bind`](/directives/bind.md#bind-directives) to attach an `x-on` directive to an element in javascript code (where case will be preserved).
 
 <a name="shorthand-syntax"></a>
 ## Shorthand syntax