fix: Copy nixl example for vllm_nixl container (NVIDIA#323)

Author: piotrm-nvidia

container/Dockerfile.vllm_nixl

@@ -291,7 +291,7 @@ COPY container/deps/vllm /workspace/container/deps/vllm
 COPY --from=dev ${VLLM_KV_CAPI_PATH} ${VLLM_KV_CAPI_PATH}
 # Copy minimal set of files for deployment/examples
 # FIXME: Use a more consolidated path after directory restructure
-COPY examples/python_rs/llm/vllm /workspace/examples/python_rs/llm/vllm
+COPY examples/python_rs/llm/vllm_nixl /workspace/examples/python_rs/llm/vllm_nixl
 
 WORKDIR /workspace