samples: drivers: charger: fix typo in sample Kconfig

The sample was not able to build because of a typo in
Kconfig when enabling CONFIG_CHARGER_DISCHARGE_CURRENT_NOTIFICATIONS

Signed-off-by: Matthias Alleman <[email protected]>

Author: allemanm

samples/drivers/charger/Kconfig

@@ -5,15 +5,15 @@
 
 mainmenu "Charger application"
 
-if CHARGER_DISCHAGRE_CURRENT_NOTIFICATIONS
+if CHARGER_DISCHARGE_CURRENT_NOTIFICATIONS
 
 config APP_DISCHARGE_CURRENT_NOTIFICATION_THRESHOLD_UA
 	int "Discharge notification threshold in µA"
 
 config APP_DISCHARGE_CURRENT_NOTIFICATION_DURATION_US
 	int "Excess discharge duration in µsec"
 
-endif # CHARGER_DISCHAGRE_CURRENT_NOTIFICATIONS
+endif # CHARGER_DISCHARGE_CURRENT_NOTIFICATIONS
 
 config APP_SYSTEM_VOLTAGE_NOTIFICATION_THRESHOLD_UV
 	int "System voltage notification falling threshold in µV"