Update integration tests paragraph in testing chapter #217
Description
Issue Template
Title: Update integration tests paragraph in testing chapter
Author: Sarah Collyer
Issue or Suggestion
The current paragraph for integration tests should be updated to reflect similar language as used in the end-to-end tests section below it. This should be written using plain English.
Proposed Change
New wording to introduce integration tests.
Type of Change Requested
[x] Fixing Existing Content
[ ] Add Additional Content to Existing Page
[ ] New Content
Additional Context / Screenshots
Add any other context or screenshots about the suggestion here