[autoscaler][docs] Examples with `head_start_ray_commands` should listen on dashboard host 0.0.0.0

Description

This user should've never had to post in the forum. Link is quite self explanatory.

https://discuss.ray.io/t/cannot-connect-to-cluster-other-than-using-loopback-address-on-head-node/9958/2

Link

No response