Fix path to initial preview images (bug 1101250)

src/templates/fields/shelf/preview.html

@@ -5,7 +5,7 @@ <h3>{{ _('Feed') }}</h3>
     <div class="phone">
       <div class="screen">
         <div class="item">
-          <img id="aviary-feed-banner" class="preview" data-aviary-type="feed-banner" data-placeholder="{{ media('marketplace-operator-dashboard/img/sample/feed.jpg') }}" src="{{ obj.background_image or media('img/sample/feed.jpg') }}">
+          <img id="aviary-feed-banner" class="preview" data-aviary-type="feed-banner" data-placeholder="{{ media('marketplace-operator-dashboard/img/sample/feed.jpg') }}" src="{{ obj.background_image or media('marketplace-operator-dashboard/img/sample/feed.jpg') }}">
           <div class="curve" data-region="{{ current_operator.region }}" data-carrier="{{ current_operator.carrier }}"></div>
           <div class="title" data-placeholder="{{ _('Example Title') }}">{{ obj.name['en-US'] or _('Example Title') }}</div>
         </div>
@@ -18,7 +18,7 @@ <h3>{{ _('Detail') }}</h3>
     <div class="phone">
       <div class="screen">
         <div class="item">
-          <img id="aviary-shelf-landing" class="preview" data-aviary-type="shelf-landing" data-placeholder="{{ media('marketplace-operator-dashboard/img/sample/detail.jpg') }}" src="{{ obj.background_image_landing or media('img/sample/detail.jpg') }}">
+          <img id="aviary-shelf-landing" class="preview" data-aviary-type="shelf-landing" data-placeholder="{{ media('marketplace-operator-dashboard/img/sample/detail.jpg') }}" src="{{ obj.background_image_landing or media('marketplace-operator-dashboard/img/sample/detail.jpg') }}">
           <div class="curve" data-region="{{ current_operator.region }}" data-carrier="{{ current_operator.carrier }}"></div>
           <div class="title" data-placeholder="{{ _('Example Title') }}">{{ obj.name['en-US'] or _('Example Title') }}</div>
         </div>