docs: update README.md

Author: allcontributors[bot]

README.md

@@ -1027,6 +1027,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
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     <td align="center"><a href="http://philippeterson.com/"><img src="https://avatars1.githubusercontent.com/u/1326208?v=4" width="100px;" alt="Philip Peterson"/><br /><sub><b>Philip Peterson</b></sub></a><br /><a href="https://github.com/async-library/react-async/commits?author=philip-peterson" title="Code">💻</a></td>
+    <td align="center"><a href="https://twitter.com/sseraphini"><img src="https://avatars3.githubusercontent.com/u/2005841?v=4" width="100px;" alt="Sibelius Seraphini"/><br /><sub><b>Sibelius Seraphini</b></sub></a><br /><a href="#review-sibelius" title="Reviewed Pull Requests">👀</a></td>
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