SDL: wikiheaders.pl: README files are no longer in Windows endline format.

From df0fd55891ee495369a19ab240f6fdc20169ed2f Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Thu, 30 Nov 2023 10:10:04 -0500
Subject: [PATCH] wikiheaders.pl: README files are no longer in Windows endline
 format.

---
 build-scripts/wikiheaders.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build-scripts/wikiheaders.pl b/build-scripts/wikiheaders.pl
index c2bb8edb4271..58abdf4eae6f 100755
--- a/build-scripts/wikiheaders.pl
+++ b/build-scripts/wikiheaders.pl
@@ -1090,7 +1090,7 @@ sub usage {
                 my $dent = $_;
                 if ($dent =~ /\A(.*?)\.md\Z/) {  # we only bridge Markdown files here.
                     next if $1 eq 'FrontPage';
-                    filecopy("$wikireadmepath/$dent", "$readmepath/README-$dent", "\r\n");
+                    filecopy("$wikireadmepath/$dent", "$readmepath/README-$dent", "\n");
                 }
             }
             closedir(DH);