fix typo

components/locale-provider/demo/basic.md

@@ -21,7 +21,7 @@ const App = () => (
   <div>
     <Pagination defaultCurrent={1} total={50} showSizeChanger />
   </div>
-};
+);
 
 ReactDOM.render(
   <LocaleProvider locale={enUS}>

components/mention/demo/controllder-simple.md

@@ -35,7 +35,7 @@ class App extends React.Component {
       />
     );
   }
-});
+}
 
 ReactDOM.render(<App />, mountNode);
 ````

components/menu/demo/sider-current.md

@@ -44,7 +44,7 @@ class Sider extends React.Component {
     }
     this.setState({ openKeys: nextOpenKeys });
   }
-  getAncestorKeys(key) {
+  getAncestorKeys = (key) => {
     const map = {
       sub3: ['sub2'],
     };

components/progress/demo/dynamic.md

@@ -48,5 +48,5 @@ class App extends React.Component {
   }
 }
 
-ReactDOM.render(<MyProgress />, mountNode);
+ReactDOM.render(<App />, mountNode);
 ````