usb/typec: fix kernel-doc notation warning for typec_match_altmode

Fix kernel-doc warning for missing function parameter 'mode' description:

../drivers/usb/typec/bus.c:268: warning: Function parameter or member 'mode' not described in 'typec_match_altmode'

Also fix typos for same function documentation.

Fixes: 8a37d87d ("usb: typec: Bus type for alternate modes")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/typec/bus.c

@@ -255,12 +255,13 @@ EXPORT_SYMBOL_GPL(typec_altmode_unregister_driver);
 /* API for the port drivers */
 
 /**
- * typec_match_altmode - Match SVID to an array of alternate modes
+ * typec_match_altmode - Match SVID and mode to an array of alternate modes
  * @altmodes: Array of alternate modes
- * @n: Number of elements in the array, or -1 for NULL termiated arrays
+ * @n: Number of elements in the array, or -1 for NULL terminated arrays
  * @svid: Standard or Vendor ID to match with
+ * @mode: Mode to match with
  *
- * Return pointer to an alternate mode with SVID mathing @svid, or NULL when no
+ * Return pointer to an alternate mode with SVID matching @svid, or NULL when no
  * match is found.
  */
 struct typec_altmode *typec_match_altmode(struct typec_altmode **altmodes,