Correct homepage and other information.

lib/src/openim.dart

@@ -2,7 +2,7 @@ import 'package:flutter/services.dart';
 import 'package:flutter_openim_sdk/flutter_openim_sdk.dart';
 
 class OpenIM {
-  static const version = '3.4.0+1';
+  static const version = '3.4.0+2';
 
   static const _channel = const MethodChannel('flutter_openim_sdk');
 

pubspec.yaml

@@ -1,8 +1,8 @@
 name: flutter_openim_sdk
 description: An instant messaging plug-in that supports Android and IOS. And the server is also all open source.
-version: 3.4.0+1
-homepage: https://www.rentsoft.cn
-repository: https://github.com/OpenIMSDK/Open-IM-SDK-Flutter
+version: 3.4.0+2
+homepage: https://www.openim.io
+repository: https://github.com/openimsdk/open-im-sdk-flutter
 
 environment:
   sdk: ">=2.12.0 <3.0.0"