message: Update hugectr_parameter_server.md
diff: ## 1 Introduction
  -The hierarchical parameter server allows HugeCTR to use models with huge embedding tables by extending HugeCTRs storage space beyond the constraints of GPU memory through utilizing various memory resources across you cluster. Further, it grants the ability to permanently store embedding tables in a structured manner.
  +The hierarchical parameter server allows HugeCTR to use models with huge embedding tables by extending HugeCTRs storage space beyond the constraints of GPU memory through utilizing various memory resources across you cluster. Further, it grants the ability to permanently store embedding tables in a structured manner. For an end-to-end demo on how to use the hierarchical parameter server, please refer to [samples](https://github.com/triton-inference-server/hugectr_backend/tree/main/samples/hierarchical_deployment).
  ## 2 Background
  