fasd: drop-in replace the autojump j alias (#3860)

plugins/fasd/fasd.plugin.zsh

@@ -8,4 +8,5 @@ if [ $commands[fasd] ]; then # check if fasd is installed
 
   alias v="f -e \"$EDITOR\""
   alias o='a -e open_command'
+  alias j='zz'
 fi