Update landing page contact email to hello@whiletruelearn.dev

Author: whiletruelearn

layouts/index.html

@@ -31,7 +31,7 @@ <h1>Hello World,</h1>
 </p>
 
 <p>
-Say hi on <a href="https://twitter.com/whiletruelearn">Twitter</a> or via <a href="mailto:kskrishnasangeeth@gmail.com">Mail</a>.
+Say hi on <a href="https://twitter.com/whiletruelearn">Twitter</a> or via <a href="mailto:hello@whiletruelearn.dev">Mail</a>.
 </p>
 
 <p>