fix: broken link

.github/workflows/first-interaction.yml

@@ -16,6 +16,6 @@ jobs:
           issue-message: 'Thanks for your contribution :fire: We will take a look asap :rocket:'
           pr-message: >-
             We are always happy to welcome new contributors :heart: To make things easier for everyone, please
-            make sure to follow our [contribution guidelines](https://github.com/eclipse-edc/Connector/blob/main/CONTRIBUTING.md),
+            make sure to follow our [contributors manual](https://eclipse-edc.github.io/documentation/for-contributors/),
             check if you have already signed the [ECA](http://www.eclipse.org/legal/ecafaq.php), and
             relate this pull request to an existing issue or discussion.