Revert doc change

Author: jrdnbradford

docs/contributing/code-review.md

@@ -43,4 +43,4 @@ add more tests.
 If you are unsure what kind of tests to add for your pull request, other
 contributors to the repo will be happy to help guide you!
 
-See [`tests.md`](/docs/contributing/tests.md) for guidelines on writing tests.
+See [](/contributing/tests) for guidelines on writing tests.