You can find it, and contribute on the document at docs.postnuke.com, and here it is;
Multisites Example (HomeNuked)
I ask EVERY ONE OF YOU, that has better knowledge about this issues than me, to PLEASE HELP, and EDIT THIS DOCUMENT and contribute as you wish, so it can be as correct as possible, and as helpful as possible for those that use that kind of environment described in the document.
Please keep your editing and contributions strictly to the example give in the document.
If you want to make example documents for other type of environments I hope you will do so, but then please create that as a seperate example document.
PLEASE HELP, EVERYONE :-)