fix course (#659)

Co-authored-by: MegaMech <MegaMech@users.noreply.github.com>

courses/all_course_model.h

@@ -2,7 +2,7 @@
 #define ALL_COURSE_MODEL_H
 
 #include "macros.h"
-#include "common_structs.h"
+#include <common_structs.h>
 
 /** WARNING!!!
  * This header file has the sizes of the vertex array's hard coded.

courses/banshee_boardwalk/course_offsets.c

@@ -1,5 +1,5 @@
 #include <PR/ultratypes.h>
-#include "PR/gbi.h"
+#include <PR/gbi.h>
 #include "course_offsets.h"
 #include "courses/banshee_boardwalk/course_data.h"
 #include <PR/gbi.h>

courses/staff_ghost_data.c

@@ -1,6 +1,6 @@
 #include <ultra64.h>
 #include <macros.h>
-#include "common_structs.h"
+#include <common_structs.h>
 
 /*
  * This file is required for data alignment