update screenshot

README.md

@@ -6,7 +6,7 @@ The Monaco Editor is the code editor which powers [VS Code](https://github.com/M
 
 Please note that this repository contains no source code for the code editor, it only contains the scripts to package everything together and ship the `monaco-editor` npm module.
 
-![image](https://cloud.githubusercontent.com/assets/5047891/19600675/5eaae9e6-97a6-11e6-97ad-93903167d8ba.png)
+![image](https://user-images.githubusercontent.com/5047891/94183711-290c0780-fea3-11ea-90e3-c88ff9d21bd6.png)
 
 ## Try it out