HID: Fix spelling mistakes "Kensigton" -> "Kensington"

There are spelling mistakes in a comment and in the module description.
Fix these.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://patch.msgid.link/20240711083513.282724-1-colin.i.king@gmail.com
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>

Author: ColinIanKing

drivers/hid/hid-kensington.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
- *  HID driver for Kensigton Slimblade Trackball
+ *  HID driver for Kensington Slimblade Trackball
  *
  *  Copyright (c) 2009 Jiri Kosina
  */
@@ -46,5 +46,5 @@ static struct hid_driver ks_driver = {
 };
 module_hid_driver(ks_driver);
 
-MODULE_DESCRIPTION("HID driver for Kensigton Slimblade Trackball");
+MODULE_DESCRIPTION("HID driver for Kensington Slimblade Trackball");
 MODULE_LICENSE("GPL");