[Update] CONTRIBUTING.md (linode#2800)

* Added the badges to the build status and the latest release

Added the badges to the build status and the latest release

* added  details about working on an issue

* Copy Edit README.md

Author: Rajakavitha1

CONTRIBUTING.md

@@ -2,6 +2,10 @@
 
 This guide describes how to write and submit a guide for the Linode docs. If you would like to write on a topic, please visit our [Contribute](http://www.linode.com/contribute) page to choose a topic and submit a writing sample. When you have received an email notifying you that your topic has been accepted, you are ready to follow the steps in this guide.
 
+## Fixing an issue
+
+If you want to start contributing by helping us correct existing issues, go to our [GitHub issues page](https://github.com/linode/docs/issues) and look for issues with the label ```help wanted```. Read through the comments and make sure there is not an open pull request against the issue, and that nobody has left a comment stating that they are working on the issue (3 days without activity is a good rule of thumb). Leave a comment stating that you would like to work on the issue.
+
 ## Fork the Linode Library
 
 All of our guides are stored in the [github.com/linode/docs](https://github.com/linode/docs) repository. You will need to clone this repository to your local computer.