ACPI / documentation: fix a sentence about GPIO resources

The sentence "These resources are used be used to pass ..." contains
a suspicious repetition, likely the author meant "These resources can
be used to pass ...".

Simplify the wording.
Signed-off-by: NAntonio Ospite <ao2@ao2.it>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

Documentation/acpi/enumeration.txt

@@ -253,7 +253,7 @@ input driver:
 GPIO support
 ~~~~~~~~~~~~
 ACPI 5 introduced two new resources to describe GPIO connections: GpioIo
-and GpioInt. These resources are used be used to pass GPIO numbers used by
+and GpioInt. These resources can be used to pass GPIO numbers used by
 the device to the driver. ACPI 5.1 extended this with _DSD (Device
 Specific Data) which made it possible to name the GPIOs among other things.