Fix "help" link in CONTRIBUTING.md
Summary:
Related to issue
Pull Request resolved:
@@ -42,7 +42,7 @@ Facebook has a [bounty program](https://www.facebook.com/whitehat/) for the safe
## How to Get in Touch
-If you have a question on how to use Relay, please get in touch with community members through one of the channels listed [here](https://facebook.github.io/relay/en/help.html).
+If you have a question on how to use Relay, please get in touch with community members through one of the channels listed [here](https://relay.dev/help).
## Style Guide
