Merge pull request #746 from readthedocs/davidfischer/typo-fallback-ads

Fix a typo on fallback ads

adserver/templates/adserver/publisher/fallback-ads-list.html

@@ -16,7 +16,7 @@
 
 <h1>{% trans 'Fallback ads' %}</h1>
 
-<p>{% blocktrans %}Fallback ads are displayed on your site when the network has no paid ads available to be shown. If you have multiple fallback ads, one will be chosen randomly. If you disable all fallback ads, either one of our house ads or no at all will be returned when there isn't a paid ad available.{% endblocktrans %}</p>
+<p>{% blocktrans %}Fallback ads are displayed on your site when the network has no paid ads available to be shown. If you have multiple fallback ads, one will be chosen randomly. If you disable all fallback ads, either one of our house ads or no ad at all will be returned when there isn't a paid ad available.{% endblocktrans %}</p>
 
 
 {% url 'publisher_fallback_ads_create' publisher.slug as create_ad_url %}