docs: update README.md [skip ci]

Author: allcontributors[bot]

README.md

@@ -1558,6 +1558,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
       <td align="center" valign="top" width="14.28%"><a href="http://apinanyogaratnam.github.io/my-personal-website-v2.0/"><img src="https://avatars.githubusercontent.com/u/72412733?v=4?s=100" width="100px;" alt="Apinan Yogaratnam"/><br /><sub><b>Apinan Yogaratnam</b></sub></a><br /><a href="#content-apinanyogaratnam" title="Content">🖋</a></td>
       <td align="center" valign="top" width="14.28%"><a href="http://trevorscanlon.eth.xyz"><img src="https://avatars.githubusercontent.com/u/30576577?v=4?s=100" width="100px;" alt="trevorsc19"/><br /><sub><b>trevorsc19</b></sub></a><br /><a href="#content-trevorsc19" title="Content">🖋</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/thouravi"><img src="https://avatars.githubusercontent.com/u/15676184?v=4?s=100" width="100px;" alt="ImThour"/><br /><sub><b>ImThour</b></sub></a><br /><a href="https://github.com/ethereum/ethereum-org-website/commits?author=thouravi" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/nvitorovic"><img src="https://avatars.githubusercontent.com/u/3808837?v=4?s=100" width="100px;" alt="Nenad Vitorović"/><br /><sub><b>Nenad Vitorović</b></sub></a><br /><a href="#content-nvitorovic" title="Content">🖋</a></td>
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