Amend README (#924)

README.mdx

@@ -36,6 +36,11 @@ changes locally.
 5. Submit your changes as a [pull request](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/creating-a-pull-request).
 New pull requests are reviewed regularly.
 
+Our team will do our best to help you get the PR over the line, though we cannot guarantee our 
+capacity. For this reason, please do not submit a PR if you think you'll be unable to address 
+necessary changes, fix linter errors, or otherwise address feedback. If you're in this position,
+consider creating an issue instead.
+
 ### Contribution guidelines
 
 The style of the documentation is based on the [Consensys style guide](https://docs-template.consensys.net/contribute/style-guide),