Update error message

[lloydwatkin]

What

Small bug in CLI error. Updated URL to point to new repo

Why

As this repo is now in the jest-community repo the old link will be behind

Notes

Just a text change

Housekeeping

• Unit tests
• Documentation is up to date
• No additional lint warnings
• [] Add yourself to contributors list (yarn contributor)
• Typescript definitions are added/updated where relevant

[codecov-io]

Codecov Report

Merging #187 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #187   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files         109    109           
  Lines         554    554           
  Branches       97     97           
=====================================
  Hits          554    554

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[mattphillips]

LGTM thanks @lloydwatkin