Fix Layout.Sider typos (#9885)

components/layout/Sider.tsx

@@ -44,13 +44,13 @@ export interface SiderProps extends React.HTMLAttributes<HTMLDivElement> {
   breakpoint?: 'xs' | 'sm' | 'md' | 'lg' | 'xl' | 'xxl';
 }
 
-export interface SliderState {
+export interface SiderState {
   collapsed?: boolean;
   below: boolean;
   belowShow?: boolean;
 }
 
-export interface SliderContext {
+export interface SiderContext {
   siderCollapsed: boolean;
 }
 
@@ -62,7 +62,7 @@ const generateId = (() => {
   };
 })();
 
-export default class Sider extends React.Component<SiderProps, SliderState> {
+export default class Sider extends React.Component<SiderProps, SiderState> {
   static __ANT_LAYOUT_SIDER: any = true;
 
   static defaultProps = {

components/menu/index.tsx

@@ -7,7 +7,7 @@ import animation from '../_util/openAnimation';
 import warning from '../_util/warning';
 import SubMenu from './SubMenu';
 import Item from './MenuItem';
-import { SliderContext } from '../layout/Sider';
+import { SiderContext } from '../layout/Sider';
 
 export interface SelectParam {
   key: string;
@@ -107,7 +107,7 @@ export default class Menu extends React.Component<MenuProps, MenuState> {
       antdMenuTheme: this.props.theme,
     };
   }
-  componentWillReceiveProps(nextProps: MenuProps, nextContext: SliderContext) {
+  componentWillReceiveProps(nextProps: MenuProps, nextContext: SiderContext) {
     const { prefixCls } = this.props;
     if (this.props.mode === 'inline' &&
         nextProps.mode !== 'inline') {