docs: update usage example.

[morganney]

• Update example usage in docs

[codecov]

Codecov Report

Merging #7 (c8837d9) into master (53b1af6) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master        #7   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           15        15           
  Lines          210       210           
  Branches        73        73           
=========================================
  Hits           210       210           

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