Fixed a logical error in the documentation.

The documentation states that if a key is present and it
has a value of false or an empty list, then the content
between the pound sign and slash will not be shown.

The documentation had the key "person" with a true value,
which means that what {{#person}} {{/person}} was wrapping
would infact be shown.  The output however did not include
the contents of what {{#person}} {{/person}} wrapped.

If person is true, then the content should be shown, if
false, then not.