Fix missing :c:func:

Author: alexmalyshev

Doc/whatsnew/3.15.rst

@@ -1668,9 +1668,10 @@ New features
   Python 3.14.
   (Contributed by Victor Stinner in :gh:`142417`.)
 
-* Add :c:func:`PyUnstable_DumpTraceback` and `PyUnstable_DumpTracebackThreads`
-  functions to safely output Python stacktraces. These were previously internal
-  functions ``_Py_DumpTraceback`` and ``_Py_DumpTracebackThreads``.
+* Add :c:func:`PyUnstable_DumpTraceback` and
+  :c:func:`PyUnstable_DumpTracebackThreads` functions to safely output Python
+  stacktraces. These were previously internal functions ``_Py_DumpTraceback``
+  and ``_Py_DumpTracebackThreads``.
   (Contributed by Alex Malyshev in :gh:`145559`.)
 
 Changed C APIs