Add one more space to format example correctly

[lee-dohm]

Example code was showing as plain text instead of as code because it had only three spaces before the code instead of four.

[lpil]

Tests are failing @lee-dohm, there's a script to run https://travis-ci.org/lpil/dogma/jobs/204345771

:)

[lee-dohm]

@lpil Updated ... thanks for the reminder :+1:

[lpil]

Thanks :)