Fix path for colemak plugin

plugins/colemak/colemak.plugin.zsh

@@ -19,4 +19,4 @@ bindkey -a 'N' vi-join
 bindkey -a 'j' vi-forward-word-end
 bindkey -a 'J' vi-forward-blank-word-end
 
-lesskey $ZSH_CUSTOM/plugins/colemak/colemak-less
+lesskey $ZSH/plugins/colemak/colemak-less