Use @nextcloud/router

Signed-off-by: Julius Härtl <jus@bitgrid.net>

src/services/StackApi.js

@@ -21,13 +21,14 @@
  */
 
 import axios from '@nextcloud/axios'
+import { generateUrl } from '@nextcloud/router'
 import './../models'
 
 export class StackApi {
 
 	url(url) {
 		url = `/apps/deck${url}`
-		return OC.generateUrl(url)
+		return generateUrl(url)
 	}
 
 	loadStacks(boardId) {