fix: Use new line symbol from system also for BLOCK comments when pri…

…nting (#6052)

Co-authored-by: Frantisek Simon <frantisek.simon@bcas.cz>

src/main/java/spoon/reflect/visitor/CommentHelper.java

@@ -98,7 +98,7 @@ static void printCommentContent(PrinterHelper printer, CtComment comment, Functi
 			if (commentType == CtComment.CommentType.BLOCK) {
 				printer.write(transfo.apply(line));
 				if (hasMoreThanOneElement(content.lines())) {
-					printer.write(CtComment.LINE_SEPARATOR);
+					printer.writeln();
 				}
 			} else {
 				printer.write(transfo.apply(line)).writeln(); // removing spaces at the end of the space