docs: update CONTRIBUTORS.md [skip ci]

CONTRIBUTORS.md

@@ -1,5 +1,5 @@
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-1-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-2-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 ## Contributors
@@ -10,7 +10,8 @@
 <table>
   <tbody>
     <tr>
-      <td align="center"><a href="https://github.com/Chryssie"><img src="https://avatars.githubusercontent.com/u/10442662?v=4?s=100" width="100px;" alt="Chryssie Ta"/><br /><sub><b>Chryssie Ta</b></sub></a><br /><a href="https://github.com/OlegRa/System.DateTimeOnly/commits?author=Chryssie" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/Chryssie"><img src="https://avatars.githubusercontent.com/u/10442662?v=4?s=100" width="100px;" alt="Chryssie Ta"/><br /><sub><b>Chryssie Ta</b></sub></a><br /><a href="https://github.com/OlegRa/System.DateTimeOnly/commits?author=Chryssie" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="http://akgvn.github.io"><img src="https://avatars.githubusercontent.com/u/4362712?v=4?s=100" width="100px;" alt="A. Kerim Güven"/><br /><sub><b>A. Kerim Güven</b></sub></a><br /><a href="https://github.com/OlegRa/System.DateTimeOnly/commits?author=akgvn" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>