fix typo : Artifact terminology unification

[park12sj]

Fix minor typo for Artifact terminology unification

[codecov]

Codecov Report

Merging #2551 (2a6a963) into master (65f6005) will not change coverage.
The diff coverage is n/a.

❗ Current head 2a6a963 differs from pull request most recent head 3784d25. Consider uploading reports for the commit 3784d25 to get more accurate results

@@           Coverage Diff           @@
##           master    #2551   +/-   ##
=======================================
  Coverage   72.64%   72.64%           
=======================================
  Files          79       79           
  Lines        3733     3733           
  Branches       58       58           
=======================================
  Hits         2712     2712           
  Misses       1017     1017           
  Partials        4        4           

Files Changed	Coverage Δ
ts/handler_utils/micro_batching.py	90.90% <ø> (ø)
ts/torch_handler/base_handler.py	69.09% <ø> (ø)

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