docs(guide/index): fixed formatting with subtitles
The "Books" and "Videos" subtitles had no space between text and the '#' so it didn't render as a subtitle. Closes #14514
A
andrea committed
92752e5b4239d59a4c26d3b0761ee11d62db3fa0
Parent: 4ad9560
Committed by Georgios Kalpakas <g.kalpakas@hotmail.com>
on 4/26/2016, 5:32:13 AM