How to inform documentation bug (or update needed)?

REF: https://help.ubuntu.com/community/Partitioning/Home/Moving

The final instruction step does not work for Ubuntu 14.04 trusty.

Where it states:
"Moving /home into /old_home" using the command:

cd / && sudo mv /home /old_home && sudo mkdir /home

will usually not work. You will get a error about /home/~ being mounted.

The solution is to edit /etc/fstab and change the information about the mount points (old and new), that is:

1) the former /home becames /media/home

2) the new /media/home now assumes the /home

Then if all is OK (using the sudo mount -a) and also rebooting test, then edit /etc/fstab and comment the /media/home mount.

That's it!

NOTE: moving a mount that you are working (reading the instructions on the browser) doesn't make sense, does it?