Performance improvements. Timely command almost done

NadekoBot.Core/Modules/Utility/RemindCommands.cs

@@ -145,7 +145,7 @@ namespace NadekoBot.Modules.Utility
 
                 using (var uow = _db.UnitOfWork)
                 {
-                    uow.BotConfig.GetOrCreate().RemindMessageFormat = arg.Trim();
+                    uow.BotConfig.GetOrCreate(set => set).RemindMessageFormat = arg.Trim();
                     await uow.CompleteAsync().ConfigureAwait(false);
                 }