Fix appraisal command in CONTRIBUTING.md file (#1253)
Fix appraisal command in CONTRIBUTING.md file (#1253)


biow0lf/shoulda-matchers,reacuna/shoulda-matchers,reacuna/shoulda-matchers,reacuna/shoulda-matchers,thoughtbot/shoulda-matchers,thoughtbot/shoulda-matchers,biow0lf/shoulda-matchers,thoughtbot/shoulda-matchers,reacuna/shoulda-matchers,biow0lf/shoulda-matchers,thoughtbot/shoulda-matchers,biow0lf/shoulda-matchers