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Marlin/src/HAL/HAL_STM32/HAL_timers_STM32.cpp

 // Public functions
 // --------------------------------------------------------------------------
 
-bool timers_initialised[NUM_HARDWARE_TIMERS] = {false};
+bool timers_initialized[NUM_HARDWARE_TIMERS] = { false };
 
 void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
 
-  if (!timers_initialised[timer_num]) {
+  if (!timers_initialized[timer_num]) {
     uint32_t step_prescaler = STEPPER_TIMER_PRESCALE - 1,
                        temp_prescaler = TEMP_TIMER_PRESCALE - 1;
     switch (timer_num) {
         HAL_NVIC_SetPriority(TEMP_TIMER_IRQ_NAME, TEMP_TIMER_IRQ_PRIO, 0);
         break;
     }
-    timers_initialised[timer_num] = true;
+    timers_initialized[timer_num] = true;
   }
 }
 

Marlin/src/HAL/HAL_TEENSY31_32/HAL_spi_Teensy.cpp

  * Standard SPI functions
  */
 
-// Initialise SPI bus
+// Initialize SPI bus
 void spiBegin(void) {
   #if !PIN_EXISTS(SS)
     #error "SS_PIN not defined!"