docs: update README.md [skip ci]

README.md

@@ -1132,12 +1132,12 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
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     <td align="center"><a href="https://github.com/codinggosu"><img src="https://avatars0.githubusercontent.com/u/16798331?v=4" width="100px;" alt=""/><br /><sub><b>Lee Dong Joo</b></sub></a><br /><a href="https://github.com/cdimascio/express-openapi-validator/commits?author=codinggosu" title="Documentation">📖</a></td>
+    <td align="center"><a href="http://dmitrychekanov.com"><img src="https://avatars3.githubusercontent.com/u/45722?v=4" width="100px;" alt=""/><br /><sub><b>Dmitry Chekanov</b></sub></a><br /><a href="https://github.com/cdimascio/express-openapi-validator/commits?author=dchekanov" title="Code">💻</a> <a href="https://github.com/cdimascio/express-openapi-validator/commits?author=dchekanov" title="Tests">⚠️</a></td>
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 <!-- ALL-CONTRIBUTORS-LIST:END -->
 
 This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!