Fixed #14502 again -- saner verbatim closing token

Previously, the closing token for the verbatim tag was specified as the
first argument of the opening token. As pointed out by Jannis, this is
a rather major departure from the core tag standard.

The new method reflects how you can give a specific closing name to
{% block %} tags.

docs/ref/templates/builtins.txt

@@ -1047,12 +1047,12 @@ Django's syntax. For example::
         {{if dying}}Still alive.{{/if}}
     {% endverbatim %}
 
-You can also specify an alternate closing tag::
+You can also designate a specific closing tag, allowing the use of
+``{% endverbatim %}`` as part of the unrendered contents::
 
-    {% verbatim finished %}
-        The verbatim tag looks like this:
-        {% verbatim %}{% endverbatim %}
-    {% finished %}
+    {% verbatim myblock %}
+        Avoid template rendering via the {% verbatim %}{% endverbatim %} block.
+    {% endverbatim myblock %}
 
 .. templatetag:: widthratio