Rewrite the NEWS entry

Describe the user visible effect instead of the implementation, and do
not reference a private function which cannot be linked.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: serhiy-storchaka

Misc/NEWS.d/next/Library/2023-04-27-14-50-03.gh-issue-103925.khC-El.rst

@@ -1 +1,3 @@
-support "\\r" in :func:`_guess_quote_and_delimiter`
+Fix :meth:`csv.Sniffer.sniff` for a sample with ``\r\n`` line endings in
+which a quoted field ends a line: a letter could be detected as the
+delimiter.