message: Added the link to the user guide in README.md
diff: @@ -5,7 +5,7 @@ Design Goals:
  * Optimized for recommender system
  * Easy to be customized
  -Please find more introductions in our "HugeCTR User Guide" and doxygen files in directory `docs\`
  +Please find more introductions in our [**HugeCTR User Guide**](docs/hugectr_user_guide.md) and doxygen files in directory `docs\`
  ## Requirements ##
  * cuBLAS >= 9.1
  