Docs: Update CLA link on Pull Requests page (#8642)

This is the same as eslint/archive-website#354, but it's retargeted to the eslint repo so that it doesn't get overwritten the next time the site is generated.

docs/developer-guide/contributing/pull-requests.md

@@ -6,7 +6,7 @@ If you want to contribute to an ESLint repo, please use a GitHub pull request. T
 
 If you'd like to work on a pull request and you've never submitted code before, follow these steps:
 
-1. Sign our [Contributor License Agreement](https://contribute.jquery.org/cla).
+1. Sign our [Contributor License Agreement](https://cla.js.foundation/eslint/eslint).
 1. Set up a [development environment](../development-environment).
 1. If you want to implement a breaking change or a change to the core, ensure there's an issue that describes what you're doing and the issue has been accepted. You can create a new issue or just indicate you're [working on an existing issue](working-on-issues). Bug fixes, documentation changes, and other pull requests do not require an issue.