feat: add email address in contact info

Author: bitmap4

src/content/docs/index.mdx

@@ -55,4 +55,7 @@ I'm passionate about cybersecurity, machine learning, and software development.
     <Card title="LinkedIn" icon="linkedin">
         Connect with me on [LinkedIn](https://linkedin.com/in/abhyudit-singh-07aaba265)
     </Card>
+	<Card title="E-mail" icon="email">
+		Mail me at [abhyudit.singh@research.iiit.ac.in](mailto:abhyudit.singh@research.iiit.ac.in)
+	</Card>
 </CardGrid>