ACPICA: Small typo fix, no functional change

ACPICA commit 9b03c05305d856274c39f3adbddd8a98ef5d018e

ACPI table header.

Link: https://github.com/acpica/acpica/commit/9b03c053


Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>