Eliminate escape

[nobu-g]

What

Remove the escape of hydra variable interpolation ${hoge}.

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (bdb34b7) 91.25% compared to head (a3cb37c) 91.40%.

Files	Patch %	Lines
src/kwja/datamodule/datasets/typo_inference.py	88.88%	1 Missing ⚠️
src/kwja/datamodule/datasets/utils.py	90.90%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #204      +/-   ##
==========================================
+ Coverage   91.25%   91.40%   +0.14%     
==========================================
  Files          59       59              
  Lines        4998     5014      +16     
==========================================
+ Hits         4561     4583      +22     
+ Misses        437      431       -6     

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