Update URL for less than 1gb memory in bootstrap.sh
Update URL for less than 1gb memory in bootstrap.sh

In bootstrap.sh, there is a slight tweak for the URL to information about advanced installation in VMs with less 1GB of memory.
dokku/dokku,progrium/dokku,claytonbrown/dokku,progrium/dokku,progrium/dokku,progrium/dokku,claytonbrown/dokku,progrium/dokku,claytonbrown/dokku,progrium/dokku,claytonbrown/dokku,progrium/dokku,dokku/dokku,dokku/dokku,dokku/dokku,dokku/dokku,claytonbrown/dokku,claytonbrown/dokku,dokku/dokku,claytonbrown/dokku,claytonbrown/dokku,dokku/dokku,progrium/dokku,dokku/dokku