Fix minor OWSM data prep bug

[juice500ml]

What?

• Fix typo bug in egs2/owsm_v3/s2t1/local/kaldi_to_whisper.py

Why?

• Fixed typo: f"<args.tgt>" -> f"<{args.tgt}>"
• Checked all the use cases of kaldi_to_whisper.py, but no script uses --tgt parameter, so no problem in OWSM v3 training. Nevertheless, fixed the bug to remove potential future bugs.
• FYI, @jctian98 @pyf98

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7c140c2) 76.54% compared to head (25cd078) 76.54%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5607   +/-   ##
=======================================
  Coverage   76.54%   76.54%           
=======================================
  Files         720      720           
  Lines       66639    66639           
=======================================
  Hits        51008    51008           
  Misses      15631    15631           

Flag	Coverage Δ
test_configuration_espnet2	∅ <ø> (∅)
test_integration_espnet1	62.92% <ø> (ø)
test_integration_espnet2	50.10% <ø> (+0.01%)	⬆️
test_python_espnet1	19.08% <ø> (ø)
test_python_espnet2	52.39% <ø> (ø)
test_utils	22.15% <ø> (ø)

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[sw005320]

Thanks!