Fix typo fist -> first

[bluemoon]

No description provided.

[codecov]

Codecov Report

Merging #63 (dcfe7b5) into master (14ef325) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #63   +/-   ##
=======================================
  Coverage   95.17%   95.17%           
=======================================
  Files           7        7           
  Lines         953      953           
=======================================
  Hits          907      907           
  Misses         30       30           
  Partials       16       16           

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