Update for Samba NT Domain FAQ with corrections

[Luke Kenneth Casson Leighton]

>    domainUsers:x:800:server$,ws1$,ws2$
> 
>   This group should have members all of the other users (real users)

.. all of the other domain users (real users)

>   if I've restarted my Samba servertoo many times or the phase of the
                                     ^ space

cool.