fix: information about wallpaper

The wallpaper changer version changed and now the name of extension is different.
The former extension is unsupported.

Linux.adoc

@@ -81,8 +81,10 @@ ssh-keygen -t ed25519 -C "Dell_on_Gitlab"
 ** I have a XPS 13 9300 shipped with Ubuntu 18.04 by Dell. The adaptive brightness can be disabled from:
 *** Settings => Power => Automatic brightness
 * to Make Your Photos as Wallpaper Slideshow in Ubuntu 22.04
-** Wallpaper Changer Extension
+** Wallpaper Changer Continued (former: Wallpaper Changer Extension but it is unsupported now)
 ** https://github.com/Ghostkeeper/gnome-wallpaper-changer
+*** run "Extensions" -> Wallpaper Changer Continued -> Settings
+*** the original path leads to: /usr/share/backgrounds/gnome
 ** sudo apt install chrome-gnome-shell
 * Install "Extension Manager" from application installer (blue jigsaw)
 * Podzał ekranu na 4: Quarter windows from installer