(React ant design Warning): dispatch: settings/changeSetting should not be prefixed with names

原因：在namespace为’settings’的js文件中调用dispatch，不需要加上settings前缀,
解决办法：删除settings/即可

import { Reducer, Subscription } from 'umi';

const SettingModel= {
  namespace: 'settings',
  state: defaultSettings,
  reducers: {
    changeSetting(state = defaultSettings, { payload }) {
      ...
      return {
        ...state,
        ...payload,
      };
    },
  },
  subscriptions: {
    setup( { history, dispatch } ) {
    ...
      dispatch( {
            type: 'settings/changeSetting',
            // 改成 type: changeSetting',
            layout: {layout: "top"},
          } )
          ...
    },
  },
};
export default SettingModel;