Fix typo in Py_GetPythonHome signature (GH-102168)

(cherry picked from commit 9bba803)

Co-authored-by: Tanner Firl <105078804+TannerFirl@users.noreply.github.com>

Author: miss-islington

Doc/c-api/init.rst

@@ -662,7 +662,7 @@ Process-wide parameters
    :c:expr:`wchar_*` string.
 
 
-.. c:function:: w_char* Py_GetPythonHome()
+.. c:function:: wchar_t* Py_GetPythonHome()
 
    Return the default "home", that is, the value set by a previous call to
    :c:func:`Py_SetPythonHome`, or the value of the :envvar:`PYTHONHOME`