Update contribution doc link

Author: ScottSuarez

README.md

@@ -37,5 +37,5 @@ for more information on provider upgrades, and how to set version constraints on
 This repository is generated by [magic-modules](https://github.com/GoogleCloudPlatform/magic-modules).
 If you wish to work on the provider, you'll need to make changes in [magic-modules](https://github.com/GoogleCloudPlatform/magic-modules). Any changes made directly to this repository will likely be overwritten.
 
-For guidance on how to contribute, see the [contribution guidelines](https://github.com/GoogleCloudPlatform/magic-modules#contributing).
+For guidance on how to contribute, see our [contribution documentation](https://googlecloudplatform.github.io/magic-modules/).
 If you have other development questions we don't cover, please [file an issue](https://github.com/hashicorp/terraform-provider-google/issues/new/choose) in the `terraform-provider-google` repository.