fix snapshot ci

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

@@ -212,7 +212,7 @@ exports[`renders ./components/button/demo/disabled.md correctly 1`] = `
   </button>
   <br />
   <button
-    class="ant-btn"
+    class="ant-btn ant-btn-background-ghost"
     type="button"
   >
     <span>
@@ -220,7 +220,7 @@ exports[`renders ./components/button/demo/disabled.md correctly 1`] = `
     </span>
   </button>
   <button
-    class="ant-btn"
+    class="ant-btn ant-btn-background-ghost"
     disabled=""
     type="button"
   >

components/menu/demo/theme.md

@@ -53,7 +53,7 @@ class Sider extends React.Component {
           mode="inline"
         >
           <SubMenu key="sub1" title={<span><Icon type="mail" /><span>Navigation One</span></span>}>
-            <Menu.Item disabled key="1">Option 1</Menu.Item>
+            <Menu.Item key="1">Option 1</Menu.Item>
             <Menu.Item key="2">Option 2</Menu.Item>
             <Menu.Item key="3">Option 3</Menu.Item>
             <Menu.Item key="4">Option 4</Menu.Item>