doc: fix indentation
doc: fix indentation

See:

  https://wincent.com/issues/1519

Signed-off-by: Wincent Colaiuta <c76ac2e9cd86441713c7dfae92c451f3e6d17fdc@wincent.com>

tmeusburger/Command-T,yrro/command-t,lencioni/command-t,vrkansagara/command-t,wincent/command-t,simichaels/dotfiles,nkpart/command-t,akitaonrails/Command-T,vrkansagara/command-t,nkpart/command-t,nkpart/command-t,wincent/command-t,asoltys/command-t,mtimkovich/command-t,akitaonrails/Command-T,simichaels/dotfiles,supriyantomaftuh/command-t,tmeusburger/Command-T,wincent/command-t,besarthoxhaj/command-t,besarthoxhaj/command-t,akitaonrails/Command-T,yrro/command-t,1234-/command-t,asoltys/command-t,tmeusburger/Command-T,lencioni/command-t,asoltys/command-t,supriyantomaftuh/command-t,mtimkovich/command-t,1234-/command-t