update links of sdks

README.md

@@ -6,8 +6,12 @@ Longbridge Binary Protocol is using for OpenAPI Socket Connection.
 
 
 For `Python` and `C++` user, we provide:
-- [Python SDK](https://github.com/longbridgeapp/openapi-python)
-- [C++ SDK](https://github.com/longbridgeapp/openapi-cpp)
+- [Python SDK](https://github.com/longbridgeapp/openapi-sdk/tree/master/python)
+- [C++ SDK](https://github.com/longbridgeapp/openapi-sdk/tree/master/cpp)
+- [Java SDK](https://github.com/longbridgeapp/openapi-sdk/tree/master/java)
+- [C SDK](https://github.com/longbridgeapp/openapi-sdk/tree/master/c)
+- [Rust SDK](https://github.com/longbridgeapp/openapi-sdk/tree/master/rust)
+- [NodeJS SDK](https://github.com/longbridgeapp/openapi-sdk/tree/master/nodejs)
 
 This repo want to show how to implement Longbridge Binary Protocol.
 
@@ -18,7 +22,6 @@ If you are `Gopher`, you can use the golang implementation to connect our socket
 Check code [here](https://github.com/longbridgeapp/openapi-protocol/tree/main/go).
 
 code structure:
-
 - go - protocol definations
 - go/client - client sample code
 - go/v1 - protocol version 1 implement