docs: fix typo

README.md

@@ -162,7 +162,7 @@ fun glowingHeadGUI(): GUI {
         slot(2, 2) {
             item = item(Material.PLAYER_HEAD) {
                 name = Component.text("Your glowing head!", NamedTextColor.GOLD)
-                skulOwner = player
+                skullOwner = player
                 glowing = true
             }
         }
@@ -298,4 +298,4 @@ getCommand("openUi").setExecutor(object : CommandExecutor {
 
 If a single instance of a GUI is being used to be opened to multiple people or is cached it's
 extremely important to mark `automaticallyUnregisterListener` as false or the `Listener` attached to the `GUI` 
-will be unregistered once all initial viewers of the `GUI` exit the menu resulting in undefined behavior. 
+will be unregistered once all initial viewers of the `GUI` exit the menu resulting in undefined behavior.