Cleanup: doxy comments

Use doxy references to function and enums,
also correct some names which became out of sync.

source/blender/windowmanager/intern/wm_event_system.c

@@ -1084,7 +1084,7 @@ int WM_operator_repeat_interactive(bContext *C, wmOperator *op)
  * \return true if #WM_operator_repeat can run
  * simple check for now but may become more involved.
  * To be sure the operator can run call `WM_operator_poll(C, op->type)` also, since this call
- * checks if WM_operator_repeat() can run at all, not that it WILL run at any time.
+ * checks if #WM_operator_repeat() can run at all, not that it WILL run at any time.
  */
 bool WM_operator_repeat_check(const bContext *UNUSED(C), wmOperator *op)
 {

source/blender/windowmanager/intern/wm_init_exit.c

@@ -403,7 +403,7 @@ static int wm_exit_handler(bContext *C, const wmEvent *event, void *userdata)
 }
 
 /**
- * Cause a delayed WM_exit() call to avoid leaking memory when trying to exit from within operators.
+ * Cause a delayed #WM_exit() call to avoid leaking memory when trying to exit from within operators.
  */
 void wm_exit_schedule_delayed(const bContext *C)
 {