[3.11] gh-70835: Clarify error message for CSV file opened with wrong newline (GH-113786) (GH-113906)

Based on patch by SilentGhost.
(cherry picked from commit 568d220993fa9b4b812ff1b425edd80dbe17dda9)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

Miss Islington (bot) committed 2y ago

99a7bdc646f1a7020231156e4aca19b949d8ee71

Parent: 76d0c4b

Committed by GitHub <noreply@github.com> on 1/17/2024, 2:06:39 PM