Fix typo

[innerlee]

add mission )

[codecov-io]

Codecov Report

Merging #102 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #102   +/-   ##
=======================================
  Coverage   87.94%   87.94%           
=======================================
  Files          25       25           
  Lines        2381     2381           
=======================================
  Hits         2094     2094           
  Misses        287      287

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[migarstka]

Thanks @innerlee

[CLAassistant]

All committers have signed the CLA.