docs: update README.md [skip ci]

Author: allcontributors[bot]

README.md

@@ -1304,6 +1304,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="http://[email protected]"><img src="https://avatars.githubusercontent.com/u/40423181?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Sandy</b></sub></a><br /><a href="https://github.com/ethereum/ethereum-org-website/commits?author=zyjblockchain" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/NachoRoizman"><img src="https://avatars.githubusercontent.com/u/107893772?v=4?s=100" width="100px;" alt=""/><br /><sub><b>NachoRoizman</b></sub></a><br /><a href="https://github.com/ethereum/ethereum-org-website/commits?author=NachoRoizman" title="Documentation">📖</a></td>
     <td align="center"><a href="https://linkedin.com/in/miragaya-ivan"><img src="https://avatars.githubusercontent.com/u/72365253?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Iván Miragaya</b></sub></a><br /><a href="https://github.com/ethereum/ethereum-org-website/commits?author=M-Ivan" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/smejak"><img src="https://avatars.githubusercontent.com/u/20759274?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jakub Smékal</b></sub></a><br /><a href="https://github.com/ethereum/ethereum-org-website/commits?author=smejak" title="Documentation">📖</a></td>
   </tr>
 </table>