os: refactor multi wait apis to better match Nintendo's latest implementation

libraries/libstratosphere/source/os/impl/os_timer_event_helper.cpp

@@ -34,7 +34,7 @@ namespace ams::os::impl {
         event->timer_state = TimerEventType::TimerState_Stop;
     }
 
-    bool UpdateSignalStateAndRecalculateNextTimeToWakeupUnsafe(TimerEventType *event, TimeSpan cur_time) {
+    bool UpdateSignalStateAndRecalcNextTimeToWakeupUnsafe(TimerEventType *event, TimeSpan cur_time) {
         TimeSpan next_time = GetReference(event->next_time_to_wakeup);
 
         switch (event->timer_state) {