feat: ppt默认背景图更换

src/enums/pageEnum.ts

@@ -13,7 +13,7 @@ export enum PageEnum {
   // ERROR_PAGE_NAME = 'ErrorPage'
   SONG_DEFAULT_COVER = 'https://oss.dayaedu.com/ktqy/1698420034679a22d3f7a.png',
   // ppt封面
-  PPT_DEFAULT_COVER = 'https://oss.dayaedu.com/ktqy/12/1701914331665.png'
+  PPT_DEFAULT_COVER = 'https://oss.dayaedu.com/ktqy/12/1701931810284.png'
 }
 
 export const NaturalType: { [_: string]: string } = {