Fix console source formatting

content/docs/software/linux.adoc

@@ -16,9 +16,9 @@ and configure it to not show untracked files:
 
 [source]
 ----
-cd $HOME
-git init --bare $HOME/.dotfiles
-git --git-dir=$HOME/.dotfiles config --local status.showUntrackedFiles no
+$ cd $HOME
+$ git init --bare $HOME/.dotfiles
+$ git --git-dir=$HOME/.dotfiles config --local status.showUntrackedFiles no
 ----
 
 I then have the following in my `.bash_aliases` to make it easier to