add newline to the end of generated files
diff --git a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
index f232bdc..679aafb 100644
--- a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
@@ -156,4 +156,4 @@
     }
   }
 }
-#endregion
\ No newline at end of file
+#endregion