[fix] html attribute quote

searx/templates/default/result_templates/images.html

@@ -1,6 +1,6 @@
 <div class="image_result">
     <p>
-        <a href="{{ result.img_src }}"><img src="{{ result.img_src }}" title={{ result.title }}/></a>
+        <a href="{{ result.img_src }}"><img src="{{ result.img_src }}" title="{{ result.title }}"/></a>
         <span class="url"><a href="{{ result.url }}" class="small_font">original context</a></span>
     </p>
 </div>