Clarify "No OneAgent Found" message (#17)

samples/SampleApplication.cs

@@ -75,7 +75,7 @@ public static void Main(string[] args)
             }
             else
             {
-                infoMessage = "NO OneAgent was found!";
+                infoMessage = "Code module has not been found! Make sure OneAgent is installed and Deep Monitoring is enabled for this process.";
             }
             Console.WriteLine(infoMessage);