Chore: Add instructions for adding keyboard shortcut to Ubuntu 22.04 (#2609)

Author: henetiriki

README.md

@@ -268,18 +268,26 @@ Steps for using the configuration:
     ln -s /var/lib/flatpak/exports/bin/org.flameshot.Flameshot ~/.local/bin/flameshot
     ```
 
-#### On Ubuntu (Tested on 18.04, 20.04)
+#### On Ubuntu (Tested on 18.04, 20.04, 22.04)
 
 To use Flameshot instead of the default screenshot application in Ubuntu we need to remove the binding on <kbd>Prt Sc</kbd> key, and then create a new binding for `/usr/bin/flameshot gui` ([adaptated](https://askubuntu.com/posts/1039949/revisions) from [Pavel's answer on AskUbuntu](https://askubuntu.com/revisions/1036473/1)).
 
-1. Remove the binding on <kbd>Prt Sc</kbd> using the following command.
+1. Remove the binding on <kbd>Prt Sc</kbd>:
 
-  ```shell
-  gsettings set org.gnome.settings-daemon.plugins.media-keys screenshot '[]'
-  ```
-
-2. Ubuntu 18.04: Go to Settings > Device > Keyboard and press the '+' button at the bottom.
-   Ubuntu 20.04: Go to Settings > Keyboard and press the '+' button at the bottom.
+   Ubuntu 18.04/20.04 using the following command:
+    ```shell
+    gsettings set org.gnome.settings-daemon.plugins.media-keys screenshot '[]'
+    ```
+   
+   Ubuntu 22.04: Go to _Settings_ > _Keyboard_ > _View and Customise Shortcuts_ > _Screenshots_ > _Take a screenshot interactively_ and press `backspace`
+
+2. Add custom binding on <kbd>Prt Sc</kbd>:
+ 
+   Ubuntu 18.04: Go to _Settings_ > _Device_ > _Keyboard_ and press the '+' button at the bottom.
+   
+   Ubuntu 20.04: Go to _Settings_ > _Keyboard_ and press the '+' button at the bottom.
+   
+   Ubuntu 22.04: Go to _Settings_ > _Keyboard_ > _View and Customise Shortcuts_ > _Custom shortcuts_ and press the '+' button at the bottom.
 
 3. Name the command as you like it, e.g. `flameshot`. And in the command insert `/usr/bin/flameshot gui`.