Acknowledge Prashant Verma.

gurmukhi/index.html

@@ -715,7 +715,7 @@ <h2>Acknowledgements</h2>
 
 <p>Special thanks to the following people who contributed information that is used in this document (contributors' names listed in in alphabetic order).</p>
 
-<p>Akshat Joshi, Kulpreet Chilana.</p>
+<p>Akshat Joshi, Kulpreet Chilana, Prashant Verma.</p>
 
 <p data-lang="en">Please find the latest info of the contributors at the <a href="https://github.com/w3c/iip/graphs/contributors">GitHub contributors list</a>.</p>
 </section>