fix menu border in demo

components/layout/__tests__/__snapshots__/demo.test.js.snap

@@ -1205,7 +1205,7 @@ exports[`renders ./components/layout/demo/top-side-2.md correctly 1`] = `
           aria-activedescendant=""
           class="ant-menu ant-menu-inline  ant-menu-light ant-menu-root"
           role="menu"
-          style="height:100%;"
+          style="height:100%;border-right:0;"
           tabindex="0"
         >
           <li

components/layout/demo/top-side-2.md

@@ -39,7 +39,7 @@ ReactDOM.render(
           mode="inline"
           defaultSelectedKeys={['1']}
           defaultOpenKeys={['sub1']}
-          style={{ height: '100%' }}
+          style={{ height: '100%', borderRight: 0 }}
         >
           <SubMenu key="sub1" title={<span><Icon type="user" />subnav 1</span>}>
             <Menu.Item key="1">option1</Menu.Item>