Update app.py

app.py

@@ -82,7 +82,7 @@ CODE_SNIPPETS = [
 "public static string ListToString<T>(List<T> list) => string.Join("", list)",  
 "public static List<string> StringToList(string str) => str.ToCharArray().Select(c => c.ToString()).ToList()",  
 "public static string JoinListWithComma<T>(List<T> list) => string.Join(",", list)",  
-"public static string JoinListWithNewLine<T>(List<T> list) => string.Join("\n", list)",  
+"public static string JoinListWithNewLine<T>(List<T> list) => string.Join(\"\n\", list)",  
 "public static List<string> SplitStringBySpace(string str) => str.Split(' ').ToList()",  
 "public static List<string> SplitStringByDelimiter(string str, char delimiter) => str.Split(delimiter).ToList()",  
 "public static List<char> SplitStringToChars(string str) => str.ToCharArray().ToList()",