Update PULL_REQUEST_TEMPLATE

.github/PULL_REQUEST_TEMPLATE

@@ -7,7 +7,7 @@ Congratulations! You're submitting your assignment!
 | :------------- | :------------- |
 | How did you go about exploring the Edamam API, how did you try querying the API? |  |
 | Describe your API Wrapper.  How did you decide on the methods you created? |  |
-| Describe how you approached testing your API Wrapper, what edge cases do you take? |  |
+| Describe an edge case or failure case test you wrote for your API Wrapper. |  |
 | Explain how VCR aids in testing an API. |  |
 | What is the Heroku URL of your deployed application? |  |
 | Do you have any recommendations on how we could improve this project for the next cohort? |  |