Update Handbook with info about Content Audit sheet
Issue Description
To be more transparent about the product documentation and how our readers use it, we have created a Content Audit sheet that lists all of our product documentation pages and statistics about each page. Data about these pages could be useful to our stakeholders, and it would be helpful to provide a link to the page, and descriptions of the available data.
Mention rubric for page scores.
Edited by Craig Norris