test: remove dumplicated space of example output.

LLama.Examples/ChatSession.cs

@@ -24,6 +24,7 @@ namespace LLama.Examples
             {
                 Console.ForegroundColor = ConsoleColor.Green;
                 var question = Console.ReadLine();
+                question += "\n";
                 Console.ForegroundColor = ConsoleColor.White;
                 var outputs = _session.Chat(question, encoding: "UTF-8");
                 foreach (var output in outputs)

LLama.Examples/ChatWithLLamaModel.cs

@@ -22,6 +22,7 @@ namespace LLama.Examples
             {
                 Console.ForegroundColor = ConsoleColor.Green;
                 var question = Console.ReadLine();
+                question += "\n";
                 Console.ForegroundColor = ConsoleColor.White;
                 var outputs = _model.Call(question);
                 foreach (var output in outputs)

LLama.Examples/InstructMode.cs

@@ -22,6 +22,7 @@ namespace LLama.Examples
             {
                 Console.ForegroundColor = ConsoleColor.Green;
                 var question = Console.ReadLine();
+                question += "\n";
                 Console.ForegroundColor = ConsoleColor.White;
                 var outputs = _model.Call(question);
                 foreach (var output in outputs)