message: Update README.md
  small fix
diff: @@ -23,10 +23,10 @@ $ ./criteo2hugectr ../../tools/criteo_script/test.out criteo_test/sparse_embeddi
  1. Build HugeCTR with the instructions on README.md under home directory.
  -2. Copy huge_ctr to sample/criteo
  +2. Copy huge_ctr to samples/criteo
  ```shell
  $ cd build/bin/
  -$ cp ./huge_ctr ../../sample/criteo/
  +$ cp ./huge_ctr ../../samples/criteo/
  ```
  3. Run huge_ctr
  