fix: doc

[coolme200]

Checklist

• npm test passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

Affected core subsystem(s)

Description of change

[codecov]

Codecov Report

Merging #10 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master     #10   +/-   ##
======================================
  Coverage    92.3%   92.3%           
======================================
  Files           3       3           
  Lines          52      52           
======================================
  Hits           48      48           
  Misses          4       4

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[fengmk2]

+1