fix bug

Author: naderzare

docs/2-sampleserver/index.md

@@ -8,7 +8,7 @@ Playmaker servers are the decision-making servers that control the agents in the
 
 ## Sample Playmaker Servers
 
-- Sample Playmaker Servers in Python by using gRPC [GitHub](https://github.com/CLSFramework/sample-playmaker-server-python-grpc) [Docs](/docs/sampleserver/sample-python-base-code/)
+- Sample Playmaker Servers in Python by using gRPC [GitHub](https://github.com/CLSFramework/sample-playmaker-server-python-grpc) [Docs](/docs/sampleserver/sample-python-base-code-gRPC/)
 - Sample Playmaker Servers in Python by using Thrift [GitHub](https://github.com/CLSFramework/sample-playmaker-server-python-thrift)
 - Sample Playmaker Servers in C# by using gRPC [GitHub](https://github.com/CLSFramework/playmaker-server-csharp)
 - Sample Playmaker Servers in NodeJs by using gRPC [GitHub](https://github.com/CLSFramework/playmaker-server-nodejs)