Fix typos

[HydrogenSulfate]

Fix typo in train.py(horder->holder)

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (05e0d27) 75.29% compared to head (dbb57d9) 75.28%.
Report is 1 commits behind head on devel.

Additional details and impacted files

@@            Coverage Diff             @@
##            devel    #2930      +/-   ##
==========================================
- Coverage   75.29%   75.28%   -0.01%     
==========================================
  Files         245      245              
  Lines       24652    24652              
  Branches     1585     1585              
==========================================
- Hits        18562    18560       -2     
- Misses       5159     5161       +2     
  Partials      931      931              

Files	Coverage Δ
deepmd/train/trainer.py	85.06% <100.00%> (ø)

... and 1 file with indirect coverage changes

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