docs: update CONTRIBUTING.MD with process for doc fixes

Author: naomiblack

CONTRIBUTING.md

@@ -29,6 +29,18 @@ duplication of work, and help you to craft the change so that it is successfully
 project.
 * **Small Changes** can be crafted and submitted to [GitHub Repository][github] as a Pull Request.
 
+
+## Want a Doc Fix?
+If you want to help improve the docs, it's a good idea to let others know what you're working on to 
+minimize duplication of effort. Before starting, check out the issue queue for [Milestone:Docs Only with label type:docs](https://github.com/angular/angular.js/issues?labels=type%3A+docs&milestone=24&state=open). 
+Comment on an issue to let others know what you're working on, or create a new issue if your work
+doesn't fit within the scope of any of the exisitng doc fix projects.
+
+For large fixes, please build and test the documentation before submitting the PR to be sure you haven't
+accidentally introduced any layout or formatting issues. 
+
+If you're just making a small change, don't worry about filing an issue first. Use the friendly blue "Improve this doc" button at the top right of the doc page to fork the repository in-place and make a quick change on the fly.
+
 ## Submission Guidelines
 
 ### Submitting an Issue