Fixed #6993 -- Fixed a grammar error in docs/templates.txt. Thanks, Ionut Ciocirlan

2. If given a variable, check whether that variable has changed. For

   example, the following shows the date every time it changes, but

   only shows the hour if both the hour and the date has changed::

   only shows the hour if both the hour and the date have changed::

        {% for date in days %}

            {% ifchanged date.date %} {{ date.date }} {% endifchanged %}