docs: update README.md [skip ci]

Author: allcontributors[bot]

README.md

@@ -1096,6 +1096,7 @@ We recognize all types of contributions. This project follows the [all-contribut
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       <td align="center" valign="top" width="16.66%"><a href="http://www.khamilton.co.uk"><img src="https://avatars.githubusercontent.com/u/4013283?v=4?s=120" width="120px;" alt="Kristian Hamilton"/><br /><sub><b>Kristian Hamilton</b></sub></a><br /><a href="#example-khamiltonuk" title="Examples">💡</a></td>
+      <td align="center" valign="top" width="16.66%"><a href="https://keshav-portfolio-resume.netlify.app/"><img src="https://avatars.githubusercontent.com/u/34001173?v=4?s=120" width="120px;" alt="Keshav Gupta"/><br /><sub><b>Keshav Gupta</b></sub></a><br /><a href="#example-keshavg2" title="Examples">💡</a></td>
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