SDL_gamecontroller.h: remove comma at end of enumerator list

include/SDL_gamecontroller.h

@@ -64,7 +64,7 @@ typedef enum
     SDL_CONTROLLER_TYPE_XBOXONE,
     SDL_CONTROLLER_TYPE_PS3,
     SDL_CONTROLLER_TYPE_PS4,
-    SDL_CONTROLLER_TYPE_NINTENDO_SWITCH_PRO,
+    SDL_CONTROLLER_TYPE_NINTENDO_SWITCH_PRO
 } SDL_GameControllerType;
 
 typedef enum