Update session-desktop.md

Author: ivan-hc

apps/session-desktop.md

@@ -3,7 +3,7 @@
  Session Desktop - Onion routing based messenger.
  A private messenger for Windows, macOS, and Linux.
 
- SITE: https://github.com/oxen-io/session-desktop
+ SITE: https://github.com/session-foundation/session-desktop
 
  | [Applications](https://portable-linux-apps.github.io/apps.html) | [Home](https://portable-linux-apps.github.io)
  | --- | --- |