closes bpo-46253: Change Py_UNICODE to Py_UCS4 in the C API docs to match the current source code (GH-30387)

(cherry picked from commit 43c5c1369cb21f08a1dc1d63923c3586b883e3e8)

Co-authored-by: Julian Gilbey <julian-git@d-and-j.net>
1 file changed