bpo-41078: Rename pycore_tupleobject.h to pycore_tuple.h (GH-21056)

diff --git a/Objects/codeobject.c b/Objects/codeobject.c
index cb4fb68..49011db 100644
--- a/Objects/codeobject.c
+++ b/Objects/codeobject.c
@@ -4,10 +4,10 @@
 #include "code.h"
 #include "opcode.h"
 #include "structmember.h"         // PyMemberDef
-#include "pycore_code.h"
+#include "pycore_code.h"          // _PyOpcache
 #include "pycore_interp.h"        // PyInterpreterState.co_extra_freefuncs
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
-#include "pycore_tupleobject.h"
+#include "pycore_tuple.h"         // _PyTuple_ITEMS()
 #include "clinic/codeobject.c.h"
 
 /* Holder for co_extra information */