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