battery: fix typo in comment

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 3f4602b..cada73f 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -831,7 +831,7 @@
 					dev_name(&device->dev), event,
 					acpi_battery_present(battery));
 #ifdef CONFIG_ACPI_SYSFS_POWER
-	/* acpi_batter_update could remove power_supply object */
+	/* acpi_battery_update could remove power_supply object */
 	if (battery->bat.dev)
 		kobject_uevent(&battery->bat.dev->kobj, KOBJ_CHANGE);
 #endif