fix typos

include/SDL3/SDL_events.h

@@ -30,7 +30,7 @@
  * coming and going, the system changing in some way, etc.
  *
  * An app generally takes a moment, perhaps at the start of a new frame, to
- * examine any events that have occured since the last time and process or
+ * examine any events that have occurred since the last time and process or
  * ignore them. This is generally done by calling SDL_PollEvent() in a loop
  * until it returns false (or, if using the main callbacks, events are
  * provided one at a time in calls to SDL_AppEvent() before the next call to

include/SDL3/SDL_hints.h

@@ -2631,7 +2631,7 @@ extern "C" {
  * the window center occur within a short time period, SDL will emulate mouse
  * warps using relative mouse mode. This can provide smoother and more
  * reliable mouse motion for some older games, which continuously calculate
- * the distance travelled by the mouse pointer and warp it back to the center
+ * the distance traveled by the mouse pointer and warp it back to the center
  * of the window, rather than using relative mouse motion.
  *
  * Note that relative mouse mode may have different mouse acceleration

include/SDL3/SDL_timer.h

@@ -34,7 +34,7 @@
  * This category covers measuring time elapsed (SDL_GetTicks(),
  * SDL_GetPerformanceCounter()), putting a thread to sleep for a certain
  * amount of time (SDL_Delay(), SDL_DelayNS(), SDL_DelayPrecise()), and firing
- * a callback function after a certain amount of time has elasped
+ * a callback function after a certain amount of time has elapsed
  * (SDL_AddTimer(), etc).
  *
  * There are also useful macros to convert between time units, like