Update pull request template (zarr-developers#2717)

Author: brokkoli71

.github/PULL_REQUEST_TEMPLATE.md

@@ -3,7 +3,7 @@
 TODO:
 * [ ] Add unit tests and/or doctests in docstrings
 * [ ] Add docstrings and API docs for any new/modified user-facing classes and functions
-* [ ] New/modified features documented in docs/tutorial.rst
-* [ ] Changes documented in docs/release.rst
+* [ ] New/modified features documented in `docs/user-guide/*.rst`
+* [ ] Changes documented in `docs/release-notes.rst`
 * [ ] GitHub Actions have all passed
 * [ ] Test coverage is 100% (Codecov passes)