[drupal-docs] Why we decided to add reference to the drupal handbook in administration help

[Gabor Hojtsy]

>> I already written above that this is an exception, although I worded it
>> differently :) I just said that there *are* potential use cases where
>> documentation modification makes sense, besides copying Drupal and
>> selling it...
> 
> But it's a very, very, very small exception ;)

Well, numerically it might be small, but if you look at the developer
list, which is full of people, who do ship customized versions of Drupal
to their customers, then the tempting thought to talk about this
possibility is big enough to just not let it pass :)

Goba