Fix NEWS blurb: use :c:func: for C API function

Author: anuj-bharambe2004

Misc/NEWS.d/next/Core_and_Builtins/2026-05-03-15-43-34.gh-issue-149180.RGWxs3.rst

@@ -1,3 +1,3 @@
-During :func:`PyType_Ready`, ``tp_as_number``, ``tp_as_sequence``, and
+During :c:func:`PyType_Ready`, ``tp_as_number``, ``tp_as_sequence``, and
 ``tp_as_mapping`` are now guaranteed to be non-NULL for all ready types.
 Types that don't define their own struct share a common empty one.