demo: update modal demo

components/modal/demo/confirm.md

@@ -53,13 +53,9 @@ function showPropsConfirm() {
     content: 'Some descriptions',
     okText: 'Yes',
     okType: 'danger',
-    maskClosable: true,
     okButtonProps: {
       disabled: true,
     },
-    cancelButtonProps: {
-      loading: true,
-    },
     cancelText: 'No',
     onOk() {
       console.log('OK');