Add steps on how to update the regression tests after a code change
Add steps on how to update the regression tests after a code change

This checklist is something that new developers on the team can refer when
they are first becoming familiar with the code base and structure of the regression tests.

stwalsh/smart-answers,stwalsh/smart-answers,aledelcueto/smart-answers,aledelcueto/smart-answers,alphagov/smart-answers,alphagov/smart-answers,stwalsh/smart-answers,aledelcueto/smart-answers,stwalsh/smart-answers,aledelcueto/smart-answers,alphagov/smart-answers,alphagov/smart-answers