Add link to Bug Bounty program

README.md

@@ -15,6 +15,8 @@
     <a href="https://reddit.com/r/puter">Reddit</a>
     ·
     <a href="https://twitter.com/HeyPuter">X (Twitter)</a>
+    ·
+    <a href="https://hackerone.com/puter_h1b">Bug Bounty</a>
 </p>
 
 <h3 align="center"><img width="700" style="border-radius:5px;" alt="screenshot" src="https://assets.puter.site/puter.com-screenshot-2.webp"></h3>