[mirotalksfu] - add missing og:url

public/views/newroom.html

@@ -35,6 +35,7 @@
             content="MiroTalk SFU calling provides real-time video calls, messaging and screen sharing."
         />
         <meta id="ogImage" property="og:image" content="https://sfu.mirotalk.com/images/mirotalksfu.png" />
+        <meta id="ogUrl" property="og:url" content="https://sfu.mirotalk.com" />
 
         <!-- StyleSheet -->