Update README.md

README.md

 ## Download
 
 You can download Debian/Ubuntu binaries:
-* [stable](https://download.jitsi.org/stable/) ([instructions](https://jitsi.org/Main/InstallJitsiMeetDebianStableRepository))
-* [testing](https://download.jitsi.org/testing/) ([instructions](https://jitsi.org/Main/InstallJitsiMeetDebianTestingRepository))
-* [nightly](https://download.jitsi.org/unstable/) ([instructions](https://jitsi.org/Main/InstallJitsiMeetDebianNightlyRepository))
+* [stable](https://download.jitsi.org/stable/) ([instructions](https://jitsi.org/downloads/ubuntu-debian-installations-instructions/))
+* [testing](https://download.jitsi.org/testing/) ([instructions](https://jitsi.org/downloads/ubuntu-debian-installations-instructions-for-testing/))
+* [nightly](https://download.jitsi.org/unstable/) ([instructions](https://jitsi.org/downloads/ubuntu-debian-installations-instructions-nightly/))
 
 You can download source archives (produced by ```make source-package```):
 * [source builds](https://download.jitsi.org/jitsi-meet/src/)