Update testing_in_isolation.md

thoughtbot / testing-rails

Source code for the Testing Rails book

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Closed sullysaurus closed 9 years ago

sullysaurus commented 9 years ago

Added in simple grammar fix. @JoelQ

JoelQ commented 9 years ago

Thanks for submitting this fix @danny-sullivan ! I've merged it in as b6bc5b543a5df9e78e0d62b3af02bb2503b26288