Update README.md

Author: NF-coder

README.md

@@ -19,7 +19,7 @@ pip install git+https://github.com/NF-coder/SimpleRPC.git
 
 server.py
 ```python
-from simple_rpc.v2.server import GrpcServerV2
+from simple_rpc import GrpcServer
 from pydantic import BaseModel
 
 class RequestModel(BaseModel):
@@ -29,7 +29,7 @@ class ResponceModel(BaseModel):
     num2: int
     num4: int
 
-app = GrpcServerV2()
+app = GrpcServer()
 
 class Server:
     @app.grpc_method()