ACPICA: Fix a typo in a function header, no functional change

Reported by Colin King.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/acpi/acpica/evevent.c b/drivers/acpi/acpica/evevent.c
index 02219ff..83cd45f 100644
--- a/drivers/acpi/acpica/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -258,7 +258,7 @@
  * DESCRIPTION: Clears the status bit for the requested event, calls the
  *              handler that previously registered for the event.
  *              NOTE: If there is no handler for the event, the event is
- *              disabled to prevent futher interrupts.
+ *              disabled to prevent further interrupts.
  *
  ******************************************************************************/