setup/index.md: group Jami application by platform

Change-Id: Ice6af0c61094f4b3339938eed33dede4494a79c7

setup/index.md

@@ -7,30 +7,49 @@
 
 ## Jami application
 
-To download and install the Jami application, select the app store, the operating system, or the platform:
+For the desired platform, select the source to download and install the Jami application.
 
-```{toctree}
-:maxdepth: 1
+### Jami for Android
 
-alma-linux
-app-store
-arch-linux
-chocolatey
-debian
-f-droid
-federa-linux
-flathub
-google-play
-linux-mint
-mac-os
-open-suse
-red-hat-enterprise-linux
-snap-store
-trisquel
-ubuntu
-windows
-zorin-os
-```
+* [F-Droid](f-droid.md)
+* [Google Play](google-play.md)
+
+### Jami for Android TV
+
+* [F-Droid](f-droid.md)
+* [Google Play](google-play.md)
+
+### Jami for GNU/Linux
+
+* [AlmaLinux](alma-linux.md)
+* [Arch Linux](arch-linux.md)
+* [Debian](debian.md)
+* [Fedora Linux](federa-linux.md)
+* [Flathub](flathub.md)
+* [Linux Mint](linux-mint.md)
+* [openSUSE](open-suse.md)
+* [Red Hat Enterprise Linux](red-hat-enterprise-linux.md)
+* [Snap Store](snap-store.md)
+* [Trisquel](trisquel.md)
+* [Ubuntu](ubuntu.md)
+* [Zorin OS](zorin-os.md)
+
+### Jami for iOS
+
+* [App Store](app-store.md)
+
+### Jami for macOS
+
+* [macOS](mac-os.md)
+
+### Jami for Web
+
+Under development.
+
+### Jami for Windows
+
+* [Chocolatey](chocolatey.md)
+* [Windows](windows.md)
 
 ## Accounts