Reword changelog

Co-Authorsd-By: Peter Bierma <[email protected]>

Author: encukou

Misc/NEWS.d/next/Core_and_Builtins/2024-11-17-21-35-55.gh-issue-126937.qluVM0.rst

@@ -1 +1,3 @@
-Fixed TypeError when a Structure's field's size is >65535 bytes
+Fix :exc:`TypeError` when a :class:`ctypes.Structure` has a field size
+that doesn't fit into an unsigned 16-bit integer.
+Instead, the maximum number of *bits* is :data:`sys.maxsize`.