fix unit test?

test/runtime/samples/select-change-handler/_config.js

@@ -8,7 +8,7 @@ export default {
 		const select = target.querySelector( 'select' );
 		assert.equal( select.value, 'b' );
 
-        const event = new window.Event( 'update' );
+		const event = new window.Event( 'change' );
 
 		select.value = 'c';
 		select.dispatchEvent( event );

test/runtime/samples/select-change-handler/main.html

@@ -5,11 +5,11 @@
 </select>
 
 <script>
-export default {
+	export default {
 		methods: {
 			updateLastChangedTo(result) {
-            this.set({ lastChangedTo: result })
+				this.set({ lastChangedTo: result });
 			}
 		}
-}
+	};
 </script>