Fix typo in docs for CLI

[Chudesnov]

Summary

Added the missing closing quote.

Test plan

Try executing the example command in your shell:

➜  my-project git:(master) jest "my.*(complex)?pattern
dquote>

Obviously, the shell expects the quote to be closed. That's what I did in this PR.

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[codecov-io]

Codecov Report

Merging #3600 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #3600   +/-   ##
======================================
  Coverage    62.4%   62.4%           
======================================
  Files         181     181           
  Lines        6648    6648           
  Branches        6       6           
======================================
  Hits         4149    4149           
  Misses       2496    2496           
  Partials        3       3

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