rules: add noinitialfocus

pages/Configuring/Window-Rules.md

@@ -83,6 +83,7 @@ you can use `hyprctl clients`.
 | rounding \[x\] | forces the application to have X pixels of rounding, ignoring the set default (in `decoration:rounding`). Has to be an int. |✓|
 | noblur | disables blur for the window |✓|
 | nofocus | disables focus to the window | |
+| noinitialfocus | disables the initial focus to the window | |
 | noborder | disables borders for the window |✓|
 | noshadow | disables shadows for the window |✓|
 | forceinput | forces an XWayland window to receive input, even if it requests not to do so. (Might fix issues like e.g. Game Launchers not receiving focus for some reason) | |