Updated link to contribution guide

Updated link to contribution guide

CONTRIBUTING.md

 # Contribution guidelines
 
-## How to contribute step-by-step
+### How to contribute step-by-step
 
 1. Fork the `Adyen/adyen-magento2` repository.
 2. Create a new branch from `develop` in your fork. This makes it easier for you to keep track of your changes.
@@ -16,4 +16,5 @@
 8. Create the pull request.
 9. Ensure that all checks have passed.
 
-After you create your pull request, one of the code owners will review your code. We aim to review your request within 2-3 business days.
+After you create your pull request, one of the code owners will review your code.
+We aim to review your request within 2-3 business days.

README.md

@@ -20,7 +20,7 @@ We strongly encourage you to join us in contributing to this repository so every
 * Resolved bug fixes and issues
 * Any general improvements
 
-Read our [**contribution guidelines**](contribute) to find out how.
+Read our [**contribution guidelines**](docs/CONTRIBUTING.md) to find out how.
 
 
 ## Installation