<img width="645" alt="Screen Shot 2019-09-28 at 10 43 24 AM" src="https://user-images.githubusercontent.com/1548775/65820360-acd1dc00-e1dc-11e9-866c-f8378bf991ab.png"> I feel that we can rename Document into Guide, and make it as when the user clicks Guide, it goes to a leaf of the documentation tree named "Guide". The goal is the leave the space of "Language Guide" to "Blog" or "News"