Fix undo when marking a task as done

src/components/tasks/partials/singleTaskInList.vue

@@ -180,11 +180,10 @@ export default {
 							this,
 							[{
 								title: 'Undo',
-								callback: () => this.markAsDone({
+								callback: () => {
-									target: {
+									this.task.done = !this.task.done
-										checked: !checked,
+									this.markAsDone(!checked)
-									},
+								}
-								}),
 							}],
 						)
 					})