Update Window Rule syntax (#1298)

Updated the examples to follow the latest spec

Author: Pegoku

content/Configuring/Window-Rules.md

@@ -247,13 +247,13 @@ windowrule {
   animation = popin
 }
 
-windowrule = no_blur, match:class firefox                                                 # Disable blur for firefox
+windowrule = no_blur on, match:class firefox                                              # Disable blur for firefox
 windowrule = move (cursor_x-(window_w*0.5)) (cursor_y-(window_h*0.5)), match:class kitty  # Move kitty to the center of the cursor
 windowrule = border_color rgb(FF0000) rgb(880808), match:fullscreen 1                     # Set border color to red if window is fullscreen
 windowrule = border_color rgb(FFFF00), match:title .*Hyprland.*                           # Set border color to yellow when title contains Hyprland
 windowrule = opacity 1.0 override 0.5 override 0.8 override, match:class kitty            # Set opacity to 1.0 active, 0.5 inactive and 0.8 fullscreen for kitty
 windowrule = match:class kitty, rounding 10                                               # Set rounding to 10 for kitty
-windowrule = match:class (pinentry-)(.*), stayfocused                                     # Fix pinentry losing focus
+windowrule = match:class (pinentry-)(.*), stay_focused on                                  # Fix pinentry losing focus
 ```
 
 ### Notes