Link to new image uploader

from zero image results page

wagtail/wagtailimages/templates/wagtailimages/images/results.html

@@ -30,7 +30,7 @@
     {% if is_searching %}
         <p>{% blocktrans %}Sorry, no images match "<em>{{ query_string }}</em>"{% endblocktrans %}</p>
     {% else %}
-        {% url 'wagtailimages_add_image' as wagtailimages_add_image_url %}
+        {% url 'wagtailimages_add_multiple' as wagtailimages_add_image_url %}
         <p>{% blocktrans %}You've not uploaded any images. Why not <a href="{{ wagtailimages_add_image_url }}">add one now</a>?{% endblocktrans %}</p>
     {% endif %}
 {% endif %}