Update the support page

[Kuff george]

https://microsoftedgesupport.microsoft.com/hc/en-us/articles/360019102233

The support page need to be updated :

1. Check your operating system. Microsoft Edge Insider builds are currently only available on Windows 10. Other versions of Windows are not supported at this time.It's not true anymore :D yay!

[#2]

Thanks @Kuff george!

We'll get that updated.