Added a link

Author: coderuhaan2004

KGG_webpage/index.html

@@ -18,7 +18,8 @@ <h1>Knowledge Graph Generator</h1>
             Ritesh Kumar
         </p>
         <p style="text-align:center;">
-            <a href="https://github.com/coderuhaan2004/KnowledgeGraphGenerator" target="_blank">GitHub Repository</a>
+            <a href="https://github.com/coderuhaan2004/KnowledgeGraphGenerator" target="_blank">GitHub Repository</a><br>
+            <a href="https://devpost.com/software/knowledge-graph-generator-eu4xch" target="_blank">Hackathon Submission (Devpost)</a>
         </p>
     </header>