Clarify contribution status in guidelines

Updated contribution guidelines to indicate that contributions are currently not being accepted.

Author: cehfisher

CONTRIBUTING.md

@@ -11,12 +11,7 @@ Please note that this project is released with a [Contributor Code of Conduct](C
 
 ## Submitting a pull request
 
-1. [Fork][fork] and clone the repository
-1. Configure and install the dependencies: `npm install`
-1. Create a new branch: `git checkout -b my-branch-name`
-1. Make your change, add tests, and make sure the tests and linter still pass
-1. Push to your fork and [submit a pull request][pr]
-1. Pat yourself on the back and wait for your pull request to be reviewed and merged.
+Thank you for your interest in this GitHub action, however, right now we are not taking contributions.
 
 Here are a few things you can do that will increase the likelihood of your pull request being accepted: