Fixed #18625 -- Removed old-style use of url tag

from the documentation.

docs/ref/contrib/comments/index.txt

@@ -250,7 +250,7 @@ Redirecting after the comment post
 To specify the URL you want to redirect to after the comment has been posted,
 you can include a hidden form input called ``next`` in your comment form. For example::
 
-    <input type="hidden" name="next" value="{% url my_comment_was_posted %}" />
+    <input type="hidden" name="next" value="{% url 'my_comment_was_posted' %}" />
 
 .. _notes-on-the-comment-form:
 

docs/topics/http/urls.txt

@@ -704,8 +704,8 @@ target each pattern individually by using its name:
 
 .. code-block:: html+django
 
-    {% url arch-summary 1945 %}
-    {% url full-archive 2007 %}
+    {% url 'arch-summary' 1945 %}
+    {% url 'full-archive' 2007 %}
 
 Even though both URL patterns refer to the ``archive`` view here, using the
 ``name`` parameter to ``url()`` allows you to tell them apart in templates.

docs/topics/i18n/translation.txt

@@ -596,7 +596,7 @@ apply.
 Reverse URL lookups cannot be carried out within the ``blocktrans`` and should
 be retrieved (and stored) beforehand::
 
-    {% url path.to.view arg arg2 as the_url %}
+    {% url 'path.to.view' arg arg2 as the_url %}
     {% blocktrans %}
     This is a URL: {{ the_url }}
     {% endblocktrans %}
@@ -790,7 +790,7 @@ To use the catalog, just pull in the dynamically generated script like this:
 
 .. code-block:: html+django
 
-    <script type="text/javascript" src="{% url django.views.i18n.javascript_catalog %}"></script>
+    <script type="text/javascript" src="{% url 'django.views.i18n.javascript_catalog' %}"></script>
 
 This uses reverse URL lookup to find the URL of the JavaScript catalog view.
 When the catalog is loaded, your JavaScript code can use the standard
@@ -992,7 +992,7 @@ template tag. It enables the given language in the enclosed template section:
     {% trans "View this category in:" %}
     {% for lang_code, lang_name in languages %}
         {% language lang_code %}
-        <a href="{% url category slug=category.slug %}">{{ lang_name }}</a>
+        <a href="{% url 'category' slug=category.slug %}">{{ lang_name }}</a>
         {% endlanguage %}
     {% endfor %}