small bug in stm32l4 code

Author: askuric

src/current_sense/hardware_specific/stm32/stm32l4/stm32l4_utils.cpp

@@ -187,7 +187,7 @@ uint32_t _timerToRegularTRGO(HardwareTimer* timer){
 #endif
 #ifdef TIM8 // if defined timer 8
   else if(timer->getHandle()->Instance == TIM8) 
-    return ADC_EXTERNALTRIG_T7_TRGO;
+    return ADC_EXTERNALTRIG_T8_TRGO;
 #endif
 #ifdef TIM15 // if defined timer 15
   else if(timer->getHandle()->Instance == TIM15)