Update CONTRIBUTING.md

Adding correct path for Forks And Pull Requests Instructions. Added updated link for beginners Slack chat, Which will redirect the user to the Slack Application instead of opening the Slack Channel in browser. If the user is not having a Slack Application, then beginners Slack chat will open in the browser.

Author: manavluhar

.github/CONTRIBUTING.md

@@ -33,7 +33,7 @@ This will allow you to collaborate with the Magento 2 development team, fork the
 1. Search current [listed issues](https://github.com/magento/magento2/issues) (open or closed) for similar proposals of intended contribution before starting work on a new contribution.
 2. Review the [Contributor License Agreement](https://opensource.adobe.com/cla.html) if this is your first time contributing.
 3. Create and test your work.
-4. Fork the Magento 2 repository according to the [Fork A Repository instructions](https://devdocs.magento.com/guides/v2.4/contributor-guide/contributing.html#fork) and when you are ready to send us a pull request – follow the [Create A Pull Request instructions](https://devdocs.magento.com/guides/v2.4/contributor-guide/contributing.html#pull_request).
+4. Follow the [Forks And Pull Requests Instructions](https://devdocs.magento.com/contributor-guide/contributing.html#forks-and-pull-requests) to fork the Magento 2 repository and send us a pull request.
 5. Once your contribution is received the Magento 2 development team will review the contribution and collaborate with you as needed.
 
 ## Code of Conduct
@@ -43,6 +43,6 @@ The full text is available in the repository [Wiki](https://github.com/magento/m
 
 ## Connecting with Community!
 
-If you have any questions, join us in [#beginners](https://magentocommeng.slack.com/messages/CH8BGFX9D) Slack chat. If you are not on our slack, [click here](http://tinyurl.com/engcom-slack) to join.
+If you have any questions, join us in [#beginners](https://magentocommeng.slack.com/archives/CH8BGFX9D) Slack chat. If you are not on our slack, [click here](http://tinyurl.com/engcom-slack) to join.
 
 Need to find a project? Check out the [Slack Channels](https://github.com/magento/magento2/wiki/Slack-Channels) (with listed project info) and the [Magento Community Portal](https://opensource.magento.com/).