docs: Add link to contribution guidelines under "Contributing" (#814)

* docs: Add link to contribution guidelines under "Contributing"

* Update README.md

* Update README.md

Co-authored-by: Tom Kerkhove <kerkhove.tom@gmail.com>

Co-authored-by: Adrian Hall <photoadrian@outlook.com>

Author: tomkerkhove

README.md

@@ -69,7 +69,7 @@ Report bugs or submit feature requests in GitHub [Issues].  Please use one of th
 
 ## Contributing
 
-This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.microsoft.com.
+This project welcomes contributions and suggestions. Guidance can be found in our [contribution guidelines]. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.microsoft.com.
 
 When you submit a pull request, a CLA-bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.
 
@@ -79,4 +79,5 @@ For more information, see the [Code of Conduct FAQ](https://opensource.microsoft
 <!-- Links -->
 [Issues]: https://github.com/Azure/azure-api-management-devops-resource-kit/issues
 [Discussions]: https://github.com/Azure/azure-api-management-devops-resource-kit/discussions
-[Stack Overflow]: https://stackoverflow.com/questions/tagged/azure-api-management-devops-resource-kit
+[Stack Overflow]: https://stackoverflow.com/questions/tagged/azure-api-management-devops-resource-kit
+[contribution guidelines]: https://github.com/Azure/azure-api-management-devops-resource-kit/blob/main/CONTRIBUTING.md