Update integration test checklist for GitHub staff (#7564)

Author: TylerJDev

.github/pull_request_template.md

@@ -43,6 +43,6 @@ Closes #
 - [ ] Tested in Firefox
 - [ ] Tested in Safari
 - [ ] Tested in Edge
-- [ ] (GitHub staff only) Integration tests pass at github/github ([Learn more about how to run integration tests](https://github.com/github/primer-engineering/blob/main/how-we-work/testing-primer-react-pr-at-dotcom.md))
+- [ ] (GitHub staff only) Integration tests pass at github/github-ui ([Learn more about how to run integration tests](https://github.com/github/primer-engineering/blob/main/how-we-work/testing-primer-react-pr-at-dotcom.md))
 
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