[1.8.x] Fixed #24657 -- Fixed include template tag example.

    your context.

An included template is rendered within the context of the template that

includes it. This example produces the output ``"Hello, John"``:

includes it. This example produces the output ``"Hello, John!"``:

* Context: variable ``person`` is set to ``"John"`` and variable ``greeting``

  is set to ``"Hello"``.

* Context: variable ``person`` is set to ``"john"``.

* Template::

    {% include "name_snippet.html" %}