add note about how to change MODKEY for windows key

config.def.h

@@ -52,6 +52,7 @@ static const int repeat_delay = 600;
 static const int tap_to_click = 1;
 static const int natural_scrolling = 0;
 
+/* If you want to use the windows key change this to WLR_MODIFIER_LOGO */
 #define MODKEY WLR_MODIFIER_ALT
 #define TAGKEYS(KEY,SKEY,TAG) \
 	{ MODKEY,                    KEY,            view,            {.ui = 1 << TAG} }, \