Notifier: fix notification to show name, not desc

It was showing description instead of name.

Cherry-picked from upstream PR:
MindFlavor#14

Jellyfin.Plugins.Telegram/Notifier.cs

@@ -52,7 +52,7 @@ public async Task SendNotification(UserNotification request, CancellationToken c
             await Notifier.SendNotification(
                 _httpClientFactory,
                 options.Token, options.ChatId, options.SilentNotificationEnabled,
-                string.IsNullOrEmpty(request.Description) ? request.Name : request.Description
+                string.IsNullOrEmpty(request.Name) ? request.Name : request.Description
             );
         }
 
@@ -77,4 +77,4 @@ private static bool IsValid(TelegramOptions options)
                    && !string.IsNullOrEmpty(options.ChatId);
         }
     }
-}
+}