Update component-attrs.md (#1183)

`data-status` is a attribute rather than property. It should be consistent with the description on line 100:`With this new configuration, our `data-status` attribute will be applied to our `input` element!`

Author: Yukon123

src/guide/component-attrs.md

@@ -18,7 +18,7 @@ app.component('date-picker', {
 })
 ```
 
-In the event we need to define the status of the date-picker component via a `data-status` property, it will be applied to the root node (i.e., `div.date-picker`).
+In the event we need to define the status of the date-picker component via a `data-status` attribute, it will be applied to the root node (i.e., `div.date-picker`).
 
 ```html
 <!-- Date-picker component with a non-prop attribute -->