docs(Introduction): fix typo

[gitname]

Correct a misspelled word

[codecov-io]

Codecov Report

Merging #1684 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1684   +/-   ##
=======================================
  Coverage   99.75%   99.75%           
=======================================
  Files         141      141           
  Lines        2410     2410           
=======================================
  Hits         2404     2404           
  Misses          6        6

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[levithomason]

Thanks!

[levithomason]

Released in semantic-ui-react@0.68.4.