Demonstrate how to round to integers using floatformat templatetag

docs/ref/templates/builtins.txt

@@ -1517,6 +1517,17 @@ displayed. For example:
 ``34.26000``  ``{{ value|floatformat:"-3" }}``  ``34.260``
 ============  ================================  ==========
 
+If the argument passed to ``floatformat`` is 0 (zero), it will round the number
+to the nearest integer.
+
+============  ================================  ==========
+``value``     Template                          Output
+============  ================================  ==========
+``34.23234``  ``{{ value|floatformat:"0" }}``   ``34``
+``34.00000``  ``{{ value|floatformat:"0" }}``   ``34``
+``39.56000``  ``{{ value|floatformat:"0" }}``   ``40``
+============  ================================  ==========
+
 Using ``floatformat`` with no argument is equivalent to using ``floatformat``
 with an argument of ``-1``.