Link to documentation not working

[tobiaslauxtermann]

The button to the documentation does not link to the public GitHub repository.

[maikrehburg]

• link is pointing to external repo readme.md
• simple browser seems broken, use external browser

[andrebell]

It seams as if SimpleBrowser cannot be used, since github.com does not allow embedding:

• https://github.com/microsoft/vscode/issues/146656#issuecomment-1088037400
• https://github.com/microsoft/vscode/issues/157889