Update PULL_REQUEST_TEMPLATE.md

.github/PULL_REQUEST_TEMPLATE.md

@@ -2,7 +2,7 @@
 
 This is just a friendly reminder about the most common mistakes.  Please make sure that you tick all boxes.  But please read our [contribution guide](https://www.attrs.org/en/latest/contributing.html) at least once, it will save you unnecessary review cycles!
 
-If an item doesn't apply to your pull request, **check it anyway** to make it apparent that there's nothing left to do.
+If an item doesn't apply to your pull request, **check it anyway** to make it apparent that there's nothing left to do.  If your pull request is a documentation fix or a trivial typo, feel free to delete the whole thing.
 
 - [ ] Added **tests** for changed code.
 - [ ] New features have been added to our [Hypothesis testing strategy](https://github.com/python-attrs/attrs/blob/master/tests/strategies.py).