Added smaller preview image

index.html

@@ -8,7 +8,7 @@
   <meta xmlns:og="http://opengraphprotocol.org/schema/" property="og:type" content="website" />
   <meta xmlns:og="http://opengraphprotocol.org/schema/" property="og:title" content="Documentary: Silent Prayers" />
   <meta xmlns:og="http://opengraphprotocol.org/schema/" property="og:description" content="In the heart of Ukraine’s frontline territories, Silent Prayers follows an American missionary as he journeys to uncover the harrowing stories of Ukrainian Protestant Christians persecuted and displaced by Russian occupying forces." />
-  <meta xmlns:og="http://opengraphprotocol.org/schema/" property="og:image" content="https://silentprayers.info/images/still_1.7.2.png" />
+  <meta xmlns:og="http://opengraphprotocol.org/schema/" property="og:image" content="https://silentprayers.info/images/still_smaller.png" />
 
   <link rel="icon" type="image/x-icon" href="favicon.ico">
   <title>Silent Prayers</title>