fix: update incorrect imports in typings (#182)

Author: web-padawan

packages/vaadin-app-layout/vaadin-app-layout.d.ts

@@ -1,2 +1 @@
 export * from './src/vaadin-app-layout.js';
-export * from './@types/interfaces';

packages/vaadin-charts/src/vaadin-chart-series.d.ts

@@ -1,6 +1,6 @@
 import { Series, SeriesOptionsType } from 'highcharts';
 
-import { ChartSeriesMarkers, ChartSeriesOptions, ChartSeriesValues } from '../@types/interfaces';
+import { ChartSeriesMarkers, ChartSeriesOptions, ChartSeriesValues } from './interfaces';
 
 /**
  * `<vaadin-chart-series>` is a custom element for creating series for Vaadin Charts.

packages/vaadin-cookie-consent/vaadin-cookie-consent.d.ts

@@ -1,2 +1 @@
 export * from './src/vaadin-cookie-consent.js';
-export * from './@types/interfaces';