chore: add additional text to CONTRIBUTING.md (#7806)

Author: kellertk

CONTRIBUTING.md

@@ -49,6 +49,25 @@ as [DRY](https://en.wikipedia.org/wiki/Don%27t_repeat_yourself) and [SOLID](http
 3. Don't include AWS account identifiers or secret keys in your examples.
 4. To conform to licensing expectation, please follow instructions on our [Licensing guidelines wiki page](https://github.com/awsdocs/aws-doc-sdk-examples/wiki/Licensing-guidelines).
 
+## Automated Tools
+
+The use of AI tooling for assisted development work is accepted and encouraged
+in this repository, but due to the volume of submissions we ask that you observe
+the following rules:
+
+- All issue and pull request submissions to this repository that are sourced by
+  AI must first be reviewed by a human before submitting to the repository.
+  Items reviewed in this way must include a statement like "generated by AI
+  tools, and reviewed by <person>"
+- Please ensure that your submissions are actually improvements. While we are
+  grateful for any proposed fixes, even if they are very small, behavior that
+  looks like creating nuisance PRs or artificially inflating submission counts
+  is not acceptable.
+- We may close issues or pull requests, or limit your ability to interact with
+  this repository, for behavior that in our estimation violates these rules or
+  any of the other rules in this repository's 
+  [Code of Conduct](CODE_OF_CONDUCT.md).
+
 ---
 
 ## Disclaimers