reword news again

Author: gpshead

Misc/NEWS.d/next/Library/2026-05-19-19-00-49.gh-issue-84353.ZU5zaQ.rst

@@ -1,4 +1,5 @@
 Preserve non-UTF-8 encoded filenames when appending to a
-:class:`zipfile.ZipFile`.  Previously, names stored in a legacy encoding
-(without the UTF-8 flag bit set) were corrupted when the central directory
-was rewritten.
+:class:`zipfile.ZipFile`.  Previously, non-ASCII names stored in a legacy
+encoding (without the UTF-8 flag bit set) could be corrupted when the
+central directory was rewritten: they were decoded as cp437 and then
+re-stored as UTF-8.