Fix dashboards/legacy_app import

Signed-off-by: Peter Fitzgibbons <pjfitz@amazon.com>

src/plugins/dashboard/public/application/legacy_app.ts

@@ -34,7 +34,7 @@ import { createHashHistory } from 'history';
 import { from, Observable, concat } from 'rxjs';
 import { filter, map, mergeMap, reduce } from 'rxjs/operators';
 
-import { DashboardCreatorFn } from 'src/plugins/dashboard/public/types';
+import { DashboardCreatorFn } from '../../common/types';
 import dashboardTemplate from './dashboard_app.html';
 import dashboardListingTemplate from './listing/dashboard_listing_ng_wrapper.html';