tests: Followup to fd061b5730bf: quote both expected and actual output.
tests: Followup to fd061b5730bf: quote both expected and actual output.

phy1729/zsh-syntax-highlighting,psprint/zsh-syntax-highlighting,m0vie/zsh-syntax-highlighting,x-way/zsh-syntax-highlighting,P71/zsh-syntax-highlighting,joshuarubin/dotfiles,x-way/zsh-syntax-highlighting,danielshahaf/zsh-syntax-highlighting-debian,joshuarubin/dotfiles,danielshahaf/zsh-syntax-highlighting,joshuarubin/dotfiles,stuha/wbr-zsh,phy1729/zsh-syntax-highlighting,psprint/zsh-syntax-highlighting,m0vie/zsh-syntax-highlighting,joshuarubin/dotfiles,danielshahaf/zsh-syntax-highlighting-debian,danielshahaf/zsh-syntax-highlighting,zsh-users/zsh-syntax-highlighting,zsh-users/zsh-syntax-highlighting,P71/zsh-syntax-highlighting