docs: Update Agora Console links in README and remove contact assistance section

Author: seymourtang

README.md

@@ -31,9 +31,9 @@ This SDK has undergone some testing to ensure its basic functionality works corr
 ## Environment Setup
 
 * [Java 1.8 or later](https://www.java.com)
-* App ID and App Certificate obtained from the [Agora Console](https://console.shengwang.cn/)
-* Basic Auth credentials from the [Agora Console](https://console.shengwang.cn/)
-* Enable the relevant service capabilities on the [Agora Console](https://console.shengwang.cn/)
+* App ID and App Certificate obtained from the [Agora Console](https://console.agora.io/v2)
+* Basic Auth credentials from the [Agora Console](https://console.agora.io/v2)
+* Enable the relevant service capabilities on the [Agora Console](https://console.agora.io/v2)
 
 ## Installation
 
@@ -264,17 +264,6 @@ public class Main {
 
 For more examples, see [Example](./examples).
 
-## How to Contact Agora for Assistance if You Encounter Difficulties
-
-> Option 1: If you are already using Agora services or are in the process of integration, you can directly contact your sales or service representative.
->
-> Option 2: Send an email to [[email protected]](mailto:[email protected]) for consultation.
->
-> Option 3: Scan the QR code to join our WeChat group for questions.
->
-> <img src="https://download.agora.io/demo/release/SDHY_QA.jpg" width="360" height="360">
----
-
 ## Contribution
 
 This project welcomes and accepts contributions. If you encounter any issues or have suggestions for improvements, please open an issue or submit a Pull Request.
@@ -290,7 +279,7 @@ For more details, please refer to the [Semantic Versioning](https://semver.org)
 
 ## References
 
-* [Agora API Documentation](https://doc.shengwang.cn/)
+* [Agora API Documentation](https://docs.agora.io/en/)
 
 ## License