README: update video links

Author: redchenjs

README.md

@@ -73,10 +73,6 @@ idf.py flash monitor
 
 <img src="docs/st7789log.png">
 
-## VFX on CUBE0414 8x8x8 Music Light Cube (Single Layer)
-
-<img src="docs/cube0414s.png">
-
 ## VFX on CUBE0414 8x8x8 Music Light Cube
 
 <img src="docs/cube0414.png">
@@ -87,5 +83,5 @@ idf.py flash monitor
 
 ## Videos Links
 
-* [音乐全彩光立方演示](https://www.bilibili.com/video/av25188707)
-* [音乐全彩光立方配套微信小程序](https://www.bilibili.com/video/av83055233)
+* [音乐全彩光立方演示](https://www.bilibili.com/video/av25188707) ([YouTube](https://www.youtube.com/watch?v=F8nfA_mEhPg))
+* [音乐全彩光立方配套微信小程序](https://www.bilibili.com/video/av83055233) ([YouTube](https://www.youtube.com/watch?v=HlruQqkIGtc))