'make perf': Designate this target as '.PHONY'.
'make perf': Designate this target as '.PHONY'.

Patch-by: Matthew Martin

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