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
2d87ef8f23967c71be165157e3b749f97d015184
Parent: 3df8b63
Committed by Georgios Kalpakas <g.kalpakas@hotmail.com>
on 4/26/2016, 5:34:11 AM