hyprland-wiki: Add some more `windowrulev2` examples

* Include two more example of 'windowrulev2' that make use of the other
  supported fields (XWayland for Steam, Float for PiP).

pages/Configuring/Window-Rules.md

@@ -77,6 +77,8 @@ Keep in mind you do *not* need to define all of them, but you need to define at
 windowrulev2 = move 100 100,class:^(kitty)$
 windowrulev2 = animation popin,class:^(kitty)$
 windowrulev2 = noblur,class:^(firefox)$
+windowrulev2 = center,class:^(Steam)$,title:^(Friends)(.*)$,xwayland 1
+windowrulev2 = pin,title:^(Picture in picture)$,floating 1
 ```
 
 {{< hint type=tip >}}