What is the official link of the editor?

When you click on the "solidity editor" link on https://playproject.io
then you end-up on:
```JS
https://ethereum-play.github.io/editor-solidity/
```
However on your teaching material i saw you using:
```JS
https://playproject.io/play-ed/
```
It the last one is the correct one, then it would be useful to direct to this from the https://playproject.io page.