docs: update README.md

Author: allcontributors[bot]

README.md

@@ -66,6 +66,7 @@ This project exists thanks to the following contributors
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       <td align="center" valign="top" width="14.28%"><a href="https://ogrisel.com"><img src="https://avatars.githubusercontent.com/u/89061?v=4?s=100" width="100px;" alt="Olivier Grisel"/><br /><sub><b>Olivier Grisel</b></sub></a><br /><a href="https://github.com/data-apis/array-api-extra/commits?author=ogrisel" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/crusaderky"><img src="https://avatars.githubusercontent.com/u/6213168?v=4?s=100" width="100px;" alt="crusaderky"/><br /><sub><b>crusaderky</b></sub></a><br /><a href="https://github.com/data-apis/array-api-extra/commits?author=crusaderky" title="Code">💻</a> <a href="https://github.com/data-apis/array-api-extra/commits?author=crusaderky" title="Documentation">📖</a></td>
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