docs: update README.md [skip ci]

Author: allcontributors[bot]

README.md

@@ -283,6 +283,7 @@ Add yourself to the contributors list [here](https://github.com/processing/proce
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       <td align="center" valign="top" width="16.66%"><a href="https://github.com/xinemata"><img src="https://avatars.githubusercontent.com/u/9159424?v=4?s=120" width="120px;" alt="Xin Xin"/><br /><sub><b>Xin Xin</b></sub></a><br /><a href="#eventOrganizing-xinemata" title="Event Organizing">📋</a> <a href="#ideas-xinemata" title="Ideas, Planning, & Feedback">🤔</a></td>
+      <td align="center" valign="top" width="16.66%"><a href="http://benjaminfoxstudios.com"><img src="https://avatars.githubusercontent.com/u/234190?v=4?s=120" width="120px;" alt="Benjamin Fox"/><br /><sub><b>Benjamin Fox</b></sub></a><br /><a href="https://github.com/processing/processing4/commits?author=tracerstar" title="Code">💻</a></td>
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