fix: changes in link and structure

CONTRIBUTING.md

@@ -1,8 +1,9 @@
 # How to contribute?
 ## Pre-requisites
-Open a free account on Naas Cloud so we can test the templates in a similar environment.
-Register for the Contributor Program so we can add you to the team of contributors in the Naas GitHub organization. To start working on our repository, you must be a part of our open-source contributors team. Please check your email and validate the invitation before you begin working on a new issue.
-Create your GitHub personal access token. Select “No expiration” and tick only the first section repository and keep your token safe as you won’t be able to generate it again.
+- Create a free account on [Naas Cloud](http://app.naas.ai/) so we can test the templates in a similar environment and be on the same page.
+- Register for the [Contributor Program]() so we can add you to the team of contributors in the Naas GitHub organization. To start working on our repository, you must be a part of our open-source contributors team.
+- Please check your email and validate the invitation before you begin working on a new issue.
+- Create your GitHub [personal access token](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens#creating-a-personal-access-token-classic). Select “No expiration” and tick only the first section repository and keep your token safe as you won’t be able to generate it again.
 
 ## Step 1: Create or Select an Issue
 Identify or propose an issue you wish to work on. It could be a snippet of Python code, an API integration with a tool you are using, or an automation leveraging existing templates with our scheduler, asset, or webhook features. Before you begin working on it, prepare the issue: