[drupal-docs] Taxonomy example in handbook

[Moshe Weitzman]

> For example, the vocabulary Food could include the following categories 
> and subcategories:
> 
>    * Dairy
>          o Milk
>    * Drink
>          o Alchohol
>                + Beer
>                + Wine
>          o Pop
>          o Milk
>    * Meat
>          o Beef
>          o Chicken
>          o Lamb
>    * Spices
>          o Sugar
> 
> ==================================
> 
> While I could understand this example if we were, for example, making 
> Mother Earth's Cookbook, we're all here to make a website.  Make the 
> examples *website* related. 

That sounds nice, but what does *website related* mean? Web sites have 
topics which they focus on. Some sites focus on trees, others focus on 
depression, and others focus on food. Given that food is something we 
are all intimitately familiar with, I find this example quite useful. Of 
course, I authored so there you go ...

It is OK to highlight deficiencies in the documentation, but even better 
is to suggest/implement an improvement.