fix typo

lib/PowerManagement/power_management.cpp

@@ -35,6 +35,6 @@ void PowerManagement::activateOLED() {
 }
 
 // cppcheck-suppress unusedFunction
-void PowerManagement::decativateOLED() {
+void PowerManagement::deactivateOLED() {
   axp.setPowerOutPut(AXP192_DCDC1, AXP202_OFF);
 }

lib/PowerManagement/power_management.h

@@ -16,7 +16,7 @@ public:
   void deactivateGPS();
 
   void activateOLED();
-  void decativateOLED();
+  void deactivateOLED();
 
 private:
   AXP20X_Class axp;