docs: update readme.md [skip ci]

Author: allcontributors[bot]

readme.md

@@ -2049,6 +2049,7 @@ Thanks goes to these wonderful people who have contributed to this repository!
     <td align="center"><a href="http://aaronshivers.com"><img src="https://avatars2.githubusercontent.com/u/42848750?v=4" width="100px;" alt="Aaron"/><br /><sub><b>Aaron</b></sub></a><br /><a href="#content-aaronshivers" title="Content">🖋</a></td>
     <td align="center"><a href="https://tomdoes.tech/"><img src="https://avatars1.githubusercontent.com/u/8683577?v=4" width="100px;" alt="Tom Nagle"/><br /><sub><b>Tom Nagle</b></sub></a><br /><a href="#content-tomanagle" title="Content">🖋</a></td>
     <td align="center"><a href="https://github.com/yvesyao"><img src="https://avatars0.githubusercontent.com/u/7723729?v=4" width="100px;" alt="Yves yao"/><br /><sub><b>Yves yao</b></sub></a><br /><a href="#content-yvesyao" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/Userbit"><img src="https://avatars1.githubusercontent.com/u/34487074?v=4" width="100px;" alt="Userbit"/><br /><sub><b>Userbit</b></sub></a><br /><a href="#content-Userbit" title="Content">🖋</a></td>
   </tr>
 </table>