Fix broken image path

Author: berkerpeksag

templates/community/post_list.html

@@ -25,7 +25,7 @@
         <div id="python-jetbrains-survey" class="python-jetbrains-survey-community-page">
             <a href="https://surveys.jetbrains.com/s3/c9-python-developers-survey-2018"
                title="Join the official Python Developers Survey 2018 and win valuable prizes!">
-               <img src="{{ STATIC_URL }}img/survey/jb_banner_download_community_page.png">
+               <img src="{{ STATIC_URL }}img/survey/jb_2018_banner_download_community_page.png">
             </a>
         </div>