Update: Tweaked logic to allow for external emails sending

coscine/issues#2158

src/NotificationBus/Controller/NotificationBusController.cs

@@ -121,7 +121,7 @@ namespace Coscine.Api.NotificationBus.Controllers
             if (requestArgs["placeholder"] != null)
             {
                 dict = ((JObject)(requestArgs["placeholder"])).ToObject<Dictionary<string, object>>();
-            }            
+            }
             dict.Add("_targetUserName", user.DisplayName);
             if (project != null)
             {