Update UserInputService.yaml (#1026)

## Changes

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changed Gui "Object"(?) inset
the insets used to be 36 but now is 58 or something with the new topbar,
link useful stuff
i might have used the notation for `class` and `enum` wrong, please fix
if its wrong

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---------

Author: lack-of-gravity-jack

content/en-us/reference/engine/classes/UserInputService.yaml

@@ -1176,8 +1176,9 @@ methods:
       to the top left corner of the screen.
     description: |
       This function returns a `Datatype.Vector2` representing the current screen
-      location of the player's `Class.Mouse` in pixels relative to the top left
-      corner. This does not account for the `Class.GuiObject` inset.
+      location of the player's `Class.Mouse` in pixels relative to the top‑left
+      corner. This does not account for the `Enum.ScreenInsets`; to get the
+      top‑left and bottom‑right insets, call `Class.GuiService:GetGuiInset()`.
 
       If the location of the mouse pointer is offscreen or the player's device
       does not have a mouse, the returned value will be undetermined.