bpo-1635741: Fix typo in PyModule_AddObjectRef() doc (GH-23234)

It is similar to PyModule_AddObject(), not to itself.

Author: vstinner

Doc/whatsnew/3.10.rst

@@ -424,7 +424,7 @@ New Features
   (Contributed by Alex Gaynor in :issue:`41784`.)
 
 * Added :c:func:`PyModule_AddObjectRef` function: similar to
-  :c:func:`PyModule_AddObjectRef` but don't steal a reference to the value on
+  :c:func:`PyModule_AddObject` but don't steal a reference to the value on
   success.
   (Contributed by Victor Stinner in :issue:`1635741`.)
 

Misc/NEWS.d/next/C API/2020-11-03-11-52-27.bpo-1635741.aDYJKB.rst

@@ -1,3 +1,3 @@
 Added :c:func:`PyModule_AddObjectRef` function: similar to
-:c:func:`PyModule_AddObjectRef` but don't steal a reference to the value on
+:c:func:`PyModule_AddObject` but don't steal a reference to the value on
 success. Patch by Victor Stinner.