Update docs for gh-146056 (GH-146213)

Doc/c-api/unicode.rst

diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rst
index 3a9b34b..6798239 100644
--- a/Doc/c-api/unicode.rst
+++ b/Doc/c-api/unicode.rst
@@ -1855,8 +1855,6 @@
    On success, return ``0``.
    On error, set an exception, leave the writer unchanged, and return ``-1``.
 
-   .. versionadded:: 3.14
-
 .. c:function:: int PyUnicodeWriter_WriteWideChar(PyUnicodeWriter *writer, const wchar_t *str, Py_ssize_t size)
 
    Write the wide string *str* into *writer*.
@@ -1892,6 +1890,10 @@
    On success, return ``0``.
    On error, set an exception, leave the writer unchanged, and return ``-1``.
 
+   .. versionchanged:: 3.14.4
+
+      Added support for ``NULL``.
+
 .. c:function:: int PyUnicodeWriter_WriteSubstring(PyUnicodeWriter *writer, PyObject *str, Py_ssize_t start, Py_ssize_t end)
 
    Write the substring ``str[start:end]`` into *writer*.

Misc/NEWS.d/next/Core_and_Builtins/2026-03-18-18-52-00.gh-issue-146056.r1tVSo.rst

diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2026-03-18-18-52-00.gh-issue-146056.r1tVSo.rst b/Misc/NEWS.d/next/Core_and_Builtins/2026-03-18-18-52-00.gh-issue-146056.r1tVSo.rst
index 6750265..ab6eab2 100644
--- a/Misc/NEWS.d/next/Core_and_Builtins/2026-03-18-18-52-00.gh-issue-146056.r1tVSo.rst
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2026-03-18-18-52-00.gh-issue-146056.r1tVSo.rst
@@ -1 +1 @@
-Fix :meth:`!list.__repr__` for lists containing ``NULL``\ s.
+Fix :func:`repr` for lists and tuples containing ``NULL``\ s.