add Gold Sponsor

Author: yngrtc

index.html

@@ -148,11 +148,11 @@
         <p>
           <strong>Sponsored with 💖 by</strong><br><br>
         </p>
-        <!--p>
-          <strong>Gold Sponsors:</strong><br><br>
-          <a href="https://www.parity.io/" target="_blank"><img src="./res/parity.png" style="height:75px;" alt="Parity Technologies"></a>
+        <p>
+          <strong>Gold Sponsors:</strong><br>
+          <a href="https://www.recall.ai" target="_blank"><img src="./res/recall.png" style="height:150px;" alt="Recall.ai"></a>
         </p>
-        <br-->
+        <br>
         <p>
           <strong>Silver Sponsors:</strong><br>
           <a href="https://getstream.io/video/voice-calling/?utm_source=https://github.com/webrtc-rs/webrtc&utm_medium=sponsorship&utm_content=&utm_campaign=webrtcRepo_July2023_video_klmh22" target="_blank"><img